Radio Advertising KPIs: Metrics That Matter in 2026

Reviewed by Peter Berk, President and Chief Media Strategist, Berk Marketing · Last updated 13 October 2026

TL;DR

Radio advertising KPIs measure campaign delivery, audience response, and business results. The main categories are media planning metrics (reach, frequency, GRPs, and CPM), direct response metrics (cost per lead, cost per acquisition, and ROAS), and attribution metrics (branded search lift, website traffic lift, and ad recall). The right KPIs depend on your campaign objective: awareness campaigns prioritize reach and recall, while lead generation and sales campaigns focus on qualified leads, acquisitions, and profitability. Tracking should be established before launch, and results should be measured over an appropriate attribution window. Research from Radiocentre and Colourtext found that only 8% of a radio spot’s full response effect occurred within the first 20 minutes, highlighting the limitations of short-term measurement.

Radio still reaches 93% of U.S. adults monthly and accounts for 64% of daily ad-supported audio time, according to Nielsen Q2 2025 data. Those numbers mean your ad will be heard. The question is whether you can prove it worked.

That question is what radio advertising KPIs are designed to answer. But the metrics that matter depend entirely on what you’re trying to accomplish. A brand awareness campaign and a direct response radio campaign share almost no KPIs in common, and using the wrong ones leads to bad decisions, wasted budget, or both.

This glossary covers every KPI a radio advertiser needs to know, organized by function, with formulas, benchmarks where available, and the interpretation mistakes that make each metric misleading.

If you’re evaluating whether radio is right for your business, or wondering whether your current campaign is performing, working with an experienced radio media buyer who sets up tracking before launch makes the difference between guessing and knowing.

What Are the Most Important Radio Advertising KPIs?

Radio advertising KPIs (key performance indicators) measure how effectively a radio campaign reaches listeners, generates leads, drives sales, and increases brand awareness. The most important KPIs depend on your campaign goal:

Brand awareness: Reach, frequency, gross rating points (GRPs), cost per thousand impressions (CPM), and ad recall.

Lead generation: Cost per lead (CPL), cost per qualified call, and lead-to-customer conversion rate.

Sales and revenue: Cost per acquisition (CPA), return on ad spend (ROAS), return on investment (ROI), and customer lifetime value (CLV).

Attribution and brand impact: Branded search lift, website traffic lift, and response rate.

To measure radio advertising accurately, establish tracking before launch, use dedicated phone numbers or landing pages where appropriate, and allow enough time for delayed responses and conversions to occur. No single KPI proves campaign success; the best measurement approach combines media delivery, audience response, and business outcomes.

Request a Free Competitive Report — no cost, no obligation. Or call (866) 747-4707 and speak with Peter Berk directly.

Radio Advertising KPIs at a Glance

Use this table to identify which radio advertising metrics to track based on your campaign objectives.

KPI	What It Measures	Best Used For
Reach	Number or percentage of unique people exposed	Brand awareness
Frequency	Average number of exposures per person	Message repetition and recall
Gross Rating Points (GRPs)	Combined reach and frequency	Comparing campaign weight
Average Quarter-Hour (AQH) Rating	Percentage of the target population listening during an average quarter-hour	Station and audience evaluation
Gross Impressions	Total estimated ad exposures	Measuring campaign delivery
Cost Per Point (CPP)	Cost per rating point delivered	Comparing media costs
Cost Per Thousand (CPM)	Cost per 1,000 impressions	Media efficiency
Cost Per Lead (CPL)	Cost to generate one lead	Lead generation
Cost Per Acquisition (CPA)	Cost to acquire one customer	Sales performance
Cost Per Call	Cost to generate an inbound call	Call-driven campaigns
Return on Ad Spend (ROAS)	Revenue generated per dollar of ad spend	Revenue efficiency
Return on Investment (ROI)	Net return relative to total campaign cost	Overall profitability
Customer Lifetime Value (CLV)	Expected customer value over the relationship	Evaluating long-term acquisition economics
Branded Search Lift	Increase in searches for a brand	Measuring indirect response
Website Traffic Lift	Increase in website visits during or after advertising	Measuring online response
Ad Recall	Percentage of surveyed listeners who remember the ad	Creative effectiveness
Share of Voice (SOV)	Brand’s share of category advertising activity	Competitive visibility
Response Rate	Proportion of the measured audience or estimated exposures that respond	Campaign response

Key takeaway: Use reach, frequency, and GRPs to evaluate media delivery; CPL, CPA, and ROAS to evaluate direct response; and branded search, website traffic, and ad recall to understand radio’s broader impact.

How to Choose the Right Radio Advertising KPIs

Start with the business outcome you want your radio campaign to achieve. Select a small set of primary KPIs that directly measure that outcome, then use supporting metrics to explain performance.

1. Define the campaign objective

Decide whether the campaign is designed to increase awareness, generate leads, drive sales, or support an existing digital campaign. Avoid choosing KPIs simply because they are easy to report.

2. Select one or two primary KPIs

Choose the metrics that best represent success. For example, a lead-generation campaign should prioritize cost per qualified lead and cost per acquisition rather than CPM alone.

3. Add diagnostic metrics

Supporting KPIs help explain why results change. Reach and frequency indicate whether enough people are being exposed to the message, while call quality and conversion rate help explain whether those exposures are generating business.

4. Establish a baseline before launch

Record existing website traffic, branded search volume, inbound calls, lead volume, and sales. Where possible, compare results with a comparable period or an unexposed control group to help separate radio’s contribution from other factors.

5. Define the attribution window and reporting cadence

Decide how long after each spot you will count responses, and how often you will review results. Include immediate responses and delayed outcomes where your tracking method allows it.

6. Set decision rules before evaluating results

Specify what would justify increasing spend, changing the creative, adjusting station allocation, or extending the test. This reduces the risk of declaring a campaign successful or unsuccessful based on one short-term metric.

Example: A home services company running radio to generate inbound calls could use cost per qualified call as its primary KPI, cost per acquired customer as its business outcome, and reach, frequency, and branded search lift as supporting indicators.

Media Planning KPIs

These are the metrics used to build, evaluate, and compare radio schedules before and during a campaign. They tell you how many people you’re reaching, how often, and at what cost.

Reach

What it measures: The number of unique people exposed to your ad within a defined period.

Reach is expressed either as a raw number (150,000 people) or as a percentage of a target population (12% of adults 25 to 54 in a market). It matters most for awareness campaigns because you cannot build a brand with people who never hear you.

Reach is distinct from impressions. If one person hears your spot three times, that counts as one unit of reach but three impressions. Understanding this distinction prevents you from confusing exposure breadth with exposure depth.

Frequency

What it measures: How many times the average listener hears your spot during a given period.

Why it matters: Recall climbs with frequency. Industry convention holds that a listener needs to hear a message at least three times per week for it to stick. But knowing how radio listening actually works, a message typically needs to run about 21 times per week on a station to reach the average listener those three times.

Here is where most glossaries stop, and where they get it wrong.

Frequency requirements vary by format. On news, talk, and sports stations, the listener is engrossed in the programming. They’re paying attention. The message lands sooner, and fewer spots per day are needed. On music formats, the listener is tuned in but often not actively listening. Background music while driving, cooking, or working. More frequency is required for the same message to register.

A schedule that looks generous on paper can still underperform if it was bought against a format that needed twice as many spots. This is one of the most common and expensive planning mistakes in radio, and it’s covered in more detail in our guide on how to read a radio schedule.

Gross Rating Points (GRPs)

What it measures: Cumulative campaign weight, combining reach and frequency into a single number.

Formula: GRPs = Reach (%) × Average Frequency

For example, a campaign that reaches 40% of the target audience at an average frequency of 5 delivers 200 GRPs. GRPs measure the total weight of a campaign, not the number of unique people reached or the campaign’s profitability.

Use GRPs alongside reach and frequency when comparing media schedules. Two campaigns can deliver the same GRPs while reaching different proportions of the audience or distributing exposures differently.

Average Quarter-Hour (AQH) Persons and Rating

What it measures: The estimated number of people listening to a station during an average 15-minute period.

This is the foundational Nielsen metric that feeds into GRPs, CPP, and CPM calculations.

AQH Persons = estimated number of listeners during an average quarter-hour.

AQH Rating = AQH Persons ÷ Population × 100

AQH Persons and AQH Rating are related but different measures: AQH Persons estimates the number of people listening during an average quarter-hour, while AQH Rating expresses that audience as a percentage of the relevant population. Confirm that the audience estimate and population denominator use the same target demographic and geographic market.

Gross Impressions

What it measures: The total number of times a commercial will be heard over the course of a schedule.

Calculation: Gross impressions = Sum of the estimated audience impressions delivered by each commercial.

For example, if 20 spots each deliver an estimated 50,000 audience impressions, the schedule generates 1,000,000 gross impressions.

For an actual campaign, use the estimated audience for the relevant station, daypart, target demographic, and spot times. Do not assume every commercial delivers the same audience.

Gross impressions count repeat exposures. They therefore measure total exposure volume, not the number of unique listeners reached.

Cost Per Point (CPP)

What it measures: The cost to reach one percent of your target audience.

Formula: CPP = Total Media Cost ÷ GRPs

CPP is the standard efficiency metric used by radio and television buyers to compare stations and markets. A station with a CPP of $200 costs $200 to reach 1% of the target demo. A competing station with a CPP of $350 costs 75% more for the same audience share.

This metric is essential when comparing radio advertising costs across markets and formats. It strips away the noise of different audience sizes and rate structures and gives you a clean cost comparison.

Cost Per Thousand Impressions (CPM)

What it measures: The cost to reach 1,000 listeners.

Formula: CPM = (Total Campaign Cost ÷ Total Impressions) × 1,000

Practitioners generally cite $4 to $12 as the range for terrestrial radio CPM, though the actual number varies by market size, format, daypart, and demographic target. A drive-time spot on a top-rated station in New York will carry a very different CPM than midday on a small-market country station.

A critical distinction: CPM is a planning metric, not a success metric. One LinkedIn practitioner puts it well: CPM tells you how efficiently you reached people, but cost per lead and cost per sale tell you whether the campaign made money. For brand awareness, CPM comparison is useful. For direct response, it’s almost irrelevant on its own.

When comparing CPM across stations or campaigns, make sure the figures use the same audience definition, geographic market, demographic target, and impression methodology. A lower CPM does not automatically mean better performance: the audience may be less relevant, and the campaign may generate fewer qualified leads or sales.

Use CPM to evaluate the cost of media delivery. Use conversion and profitability metrics to assess business results.

For a breakdown of how SiriusXM CPM compares to terrestrial radio, that guide covers the differences.

Direct Response KPIs

These are the metrics that tell a direct response advertiser whether their campaign is profitable. They require proper tracking infrastructure, specifically dedicated phone numbers and landing pages per station and per platform, set up before the campaign launches.

Cost Per Lead (CPL)

What it measures: How much it costs to generate one new lead.

Basic formula: CPL = Total Radio Spend ÷ Leads Generated

Fully loaded formula: CPL = (Ad Spend + Labor + Tools + Creative + Agency Fees) ÷ Total Leads

The fully loaded CPL is typically two to three times higher than media-only CPL. Both numbers are useful, but only if you’re consistent about which one you’re tracking.

One Reddit commenter with both radio and business-owner experience recommended using a dedicated phone number, a microsite, intake questions, and CRM source capture together, noting that no single tracking method is sufficient on its own. That advice matches what experienced buyers know: attributing radio leads to sales requires layered measurement.

Cost Per Acquisition / Cost Per Order (CPA/CPO)

What it measures: Total media spend divided by the number of customers or orders acquired.

Formula: CPA = Total Campaign Cost ÷ Number of Customers Acquired

CPA differs from CPL in one important way: it counts only closed sales, not leads. The gap between CPL and CPA is your conversion pipeline. A low CPL with a high CPA means plenty of leads are coming in but not converting, which points to a sales process or offer problem rather than a media problem.

Return on Ad Spend (ROAS)

What it measures: Revenue generated per dollar of ad spend.

Formula: ROAS = Revenue ÷ Ad SpendThe Attribution Delay Problem

A ROAS of 3:1 (three dollars of revenue for every dollar spent) is generally considered a successful campaign. Nielsen Global Compass Benchmarks rank radio at a $2 ROAS, second only to social media ($2.22) and ahead of display ($1.52), search ($1.16), and connected TV ($1.15).

That benchmark is an average across all campaign types. Direct response campaigns with strong offers and proper frequency regularly exceed it.

Return on Investment (ROI)

What it measures: Net profit from a campaign relative to its total cost.

Formula: ROI = (Revenue Attributed to Radio – Total Campaign Cost) ÷ Total Campaign Cost × 100

ROI is broader than ROAS because it accounts for all campaign costs, not just media spend. It includes creative production, agency fees, tracking tools, and labor. For a deeper walkthrough, measuring radio advertising ROI covers the full methodology.

Customer Lifetime Value (CLV / LTV)

What it measures: The total revenue a single customer generates over the entire relationship.

CLV is critical for categories like insurance, legal services, financial services, and home services where a single customer produces revenue over years. When CLV is high, a higher CPL or CPA can still be very profitable.

An insurance lead that costs $150 to acquire but generates $3,000 in lifetime commissions has a CLV-to-CPA ratio of 20:1. That context changes how you evaluate every other KPI in the campaign.

Cost Per Call / Cost Per Qualified Call

What it measures: The cost to generate one inbound call, and separately, one qualified call (a caller who meets your lead criteria).

This KPI requires dedicated tracking numbers per station and per platform. When satellite and terrestrial response are counted separately rather than pooled, you can identify which stations and platforms actually produce qualified callers, not just phone volume.

Practitioners on Reddit warn that drive-time listeners are driving and will not remember a complex web address. For radio campaigns targeting drive time, a phone number with a simple, memorable call to action will always outperform a URL.

Attribution and Lift KPIs

These metrics capture the indirect effects of radio, the search activity, website visits, and brand recall that radio produces but that don’t always show up as direct-response calls.

Branded Search Lift

What it measures: The increase in Google searches containing your brand name after radio ads air.

A RAB study of over 2,100 local radio ads across six categories found an average 29% lift in Google search activity. Separate research from Marketron found an average 18% increase, with some businesses reaching 40%.

This is one of the most underrated radio advertising KPIs. Even when a listener doesn’t call during the commercial, many will search for the brand later. If you’re not monitoring branded search volume before and during a campaign, you’re missing a significant share of radio’s impact.

Web Traffic Lift

What it measures: The increase in website visits attributable to radio advertising.

Studies show an average 14% increase in website traffic from AM/FM advertising, based on Westwood One and LeadsRx data across 17 campaigns. Updated Radiocentre research using a larger dataset found that radio advertising boosts daily web sessions by 16% and is twice as cost-efficient as other demand-generation media combined.

The same Radiocentre study attributed 43% of the increase in direct website traffic to radio, meaning listeners typed the URL directly rather than finding the site through search.

Ad Recall Rate

What it measures: The percentage of exposed listeners who correctly remember the content or key message of your ad.

Formula: Ad Recall Rate = (Listeners Who Recall the Ad ÷ Total Listeners Exposed) × 100

Ad recall is typically measured through post-campaign surveys. It’s most useful as a diagnostic tool: low recall despite high frequency suggests the creative isn’t cutting through, while high recall with low response suggests the offer isn’t compelling enough.

Share of Voice (SOV)

What it measures: Your brand’s proportion of total advertising in your category.

Formula: SOV = (Your Ad Impressions or Spots ÷ Total Category Ad Impressions or Spots) × 100

SOV tells you whether your brand is being drowned out or dominating the airwaves in your niche. An advertiser running 50 spots per week in a category where competitors collectively run 450 holds a 10% share of voice.

Extra Share of Voice (ESOV)

What it measures: The gap between your share of voice and your share of market.

Formula: ESOV = Share of Voice – Share of Market

Positive ESOV means you’re outspending your market position, which research consistently links to market share growth over time. Radiocentre studies found positive ESOV results when radio was part of the media mix, supporting radio’s role in driving share gains.

Response Rate

What it measures: How many people took action after hearing your ad’s call to action.

Since listeners can’t click a radio ad, response is measured through inbound calls to tracked numbers, visits to dedicated landing pages, coupon code usage, and upticks in branded search. Response rate is the ratio of responses to estimated impressions.

How Radio Format Affects Campaign KPIs

Radio format can influence campaign performance by changing the audience a station reaches, the context in which listeners hear an advertisement, and the response patterns observed after exposure.

News, talk, sports, and music stations may perform differently depending on the target audience, advertising message, daypart, and campaign objective. Spoken-word formats may be particularly relevant for some service categories, while music stations may provide valuable reach among other demographic groups.

Do not assume that a format automatically requires a fixed number of spots or delivers a specific level of recall. Instead, evaluate each schedule using available audience data, target-audience fit, reach, frequency, delivered impressions, and measured response.

When comparing stations, consider:

• Audience fit: Does the station reach the people most likely to buy?

• Media delivery: What reach, frequency, and impression volume does the schedule provide?

• Creative fit: Does the message make sense for the audience and listening context?

• Response quality: Which stations generate qualified leads, appointments, or sales?

• Cost efficiency: What does each station cost per qualified lead or acquired customer?

The best format is the one that supports your campaign objective at an acceptable cost—not necessarily the station with the lowest CPM or the highest audience rating.

The Attribution Delay Problem

This is the single most important piece of context for interpreting radio advertising KPIs, and the one most often ignored.

Research from Radiocentre and Colourtext, based on regression modeling of 1.6 billion multimedia impacts across 30 million web sessions, found that it takes approximately 19 to 21 hours for the full effects of each radio spot to be realized. Only 8% of a radio spot’s impact is delivered in the first 20 minutes after airing.

Read that again: 92% of radio’s measurable impact is missed if you only look at the 20 minutes following transmission.

The problem compounds with attribution windows. Audacy research found that advertisers miss 35% of their attributed conversions when using a 7-day measurement window instead of a 30-day one. In high-consideration categories like automotive, financial services, and B2B, the ideal window may extend to 6 or even 12 weeks.

This finding has direct consequences for how radio campaigns are evaluated:

• A two-week “test flight” measured in real time will undercount results dramatically.

• Comparing radio response to paid search response using the same attribution window penalizes radio unfairly.

• Campaigns declared “failures” after a short run may actually have been building the pipeline that converts weeks later.

Many advertisers are unaware that solutions exist for tracking radio’s delayed impact. Survey data confirms a perception gap: far fewer marketers believe they can accurately measure ROI for radio compared to SEO, SEM, or email. The tools exist. The methodology exists. The gap is in setup and patience.

Measurement note: The 8% figure comes from regression modeling of radio advertising’s delayed effect on web activity. It describes the share of the modeled response effect occurring in the first 20 minutes, not the percentage of listeners who responded or the percentage of all campaign conversions. Results will vary by campaign, audience, creative, and measurement methodology.

How to Track Radio Advertising KPIs

Accurate radio advertising measurement starts before the first commercial airs. A tracking plan helps connect station activity to calls, website visits, qualified leads, and sales.

Before the campaign

• Record baseline website sessions, branded search volume, inbound calls, leads, and sales.

• Assign unique tracking numbers or campaign-specific extensions where appropriate.

• Create dedicated landing pages or memorable URLs for radio campaigns.

• Configure CRM source fields so sales teams can record how each lead discovered the business.

• Establish the campaign’s primary KPIs, target costs, attribution window, and reporting schedule.

During the campaign

• Confirm that scheduled commercials aired as planned.

• Monitor reach, frequency, delivered impressions, and GRPs where audience data is available.

• Track inbound calls, landing-page visits, branded searches, and new leads.

• Record qualified leads, appointments, and closed sales rather than counting every inquiry as a successful conversion.

• Document other marketing activity, promotions, or seasonal changes that could affect results.

After the campaign

• Compare results with the pre-campaign baseline.

• Calculate CPL, cost per qualified call, CPA, ROAS, and ROI where the required data is available.

• Review delayed responses over an appropriate attribution window.

• Compare station and creative performance using consistent definitions and reporting periods.

• Use the results to adjust the next campaign’s budget, schedule, offer, and creative.

Important: An increase in calls or website traffic after a commercial airs does not, by itself, prove that radio caused the increase. For stronger attribution, account for existing demand, seasonality, concurrent campaigns, and other factors that could influence the results.

Common KPI Measurement Mistakes

Even the right radio advertising KPIs produce misleading numbers when the tracking infrastructure is wrong. Here are the mistakes that come up most often.

Using the main business phone number

If all calls route to the same number, there is no way to calculate cost per lead by station, by market, or by platform. Every station and every platform needs its own dedicated tracking number, agreed and activated before the first spot airs.

Pooling satellite and terrestrial response

SiriusXM and terrestrial radio reach different audiences in different contexts. Combining their call volume into one number makes it impossible to evaluate either channel accurately. Track them separately. A media buyer versus a station sales rep will approach this setup very differently.

Judging radio by digital click-through standards

Radio is not a click medium. There is no link to tap. Applying digital attribution expectations to radio guarantees disappointment. Radio’s impact shows up in calls, branded searches, direct site visits, and walk-ins, often hours or days after the spot airs.

Running too short a test flight

Given the 19-to-21-hour attribution delay and the need for sufficient frequency before a listener even remembers your message, a one-week or two-week test produces data that is almost meaningless. Campaigns need enough duration for frequency to build and for the delayed response curve to play out.

Ignoring creative quality as a variable

Every KPI in this glossary is affected by what the commercial actually says. A weak offer, a confusing call to action, or a spot that buries the phone number will suppress response no matter how well the media is planned. After sufficient frequency, the greater the incentive, the better the response. KPIs improve when the creative carries a real offer worth responding to.

Radio Advertising KPI Benchmarks: What Counts as Good Performance?

There is no universal benchmark that determines whether every radio campaign is successful. Performance depends on the target audience, market, station format, campaign objective, offer, and measurement method.

KPI	How to Evaluate It	What to Compare
Reach	Whether the campaign reaches enough of the intended audience	Target reach, market size, and campaign duration
Frequency	Whether the message receives enough exposure to support the campaign objective	Reach distribution, creative, and schedule
GRPs	Whether the schedule delivers the planned media weight	Planned versus delivered GRPs
CPM	Whether media delivery is cost-efficient	Comparable stations, markets, and audience targets
CPL	Whether leads are generated at an acceptable cost	Target CPL and historical campaign performance
Cost per qualified call	Whether calls meet the business’s lead criteria	Qualification rate and cost per qualified call
CPA	Whether customer acquisition costs fit the business model	Allowable CPA and customer economics
ROAS	How much revenue is attributed to each advertising dollar	Break-even ROAS and campaign target
Branded search lift	Whether brand-related search activity increases during the campaign	Pre-campaign baseline and comparable periods
Website traffic lift	Whether website sessions increase beyond the expected baseline	Historical traffic, seasonality, and other marketing activity
Ad recall	Whether the target audience remembers the advertisement	Pre-campaign awareness or a comparable exposed/unexposed study

How to set a meaningful target

Use historical campaign data, station proposals, audience research, and your business’s unit economics to set targets before launch. If reliable historical data is unavailable, treat the first campaign as a learning period and document the assumptions used.

For example, a business can calculate its allowable cost per acquisition from customer profitability, then use its expected lead-to-customer conversion rate to estimate a target cost per lead. These targets are more useful than adopting an industry average without considering the business model.

Putting It All Together: Which KPIs for Which Goal

If your goal is brand awareness, focus on reach, frequency, GRPs, CPM, branded search lift, web traffic lift, ad recall, and share of voice. These metrics tell you whether people are hearing your message and whether it’s registering.

If your goal is direct response, focus on cost per lead, cost per acquisition, ROAS, ROI, and customer lifetime value. CPM matters only as a planning input. The metrics that determine success or failure are the ones denominated in leads, sales, and dollars.

In both cases, give the campaign enough time for the attribution delay to resolve, and make sure tracking is in place from day one.

Request a Free Competitive Report to see which stations your competitors are running on, and how heavily. No cost, no obligation. Or call (866) 747-4707 and speak with Peter Berk directly.

Frequently Asked Questions

What is the most important KPI for radio advertising?

It depends on the campaign goal. For brand awareness, reach and frequency are primary. For direct response, cost per lead and cost per acquisition determine whether the campaign is profitable. There is no single “most important” KPI that applies to every advertiser.

How do you track radio advertising results?

Through dedicated phone numbers per station and per platform, unique landing page URLs, CRM source capture during intake, and monitoring branded search volume and web traffic lifts. No single method is sufficient. Layered tracking provides the most accurate picture of radio’s performance.

What is a good ROAS for radio advertising?

Nielsen Global Compass Benchmarks place average radio ROAS at $2 per dollar spent. A 3:1 ratio is generally considered strong. Direct response campaigns with compelling offers and proper frequency regularly exceed the average, while poorly tracked campaigns often appear to underperform because of attribution gaps.

How long should a radio campaign run before measuring KPIs?

At minimum, long enough for frequency to build and for the attribution delay to resolve. Research shows it takes 19 to 21 hours for the full effect of each spot to materialize, and advertisers miss 35% of conversions with a 7-day window versus a 30-day one. High-consideration categories may need 6 to 12 weeks for a meaningful read.

Why do my radio KPIs look worse than my digital KPIs?

Likely because of attribution window mismatch. Digital channels get credit at the moment of click. Radio’s impact unfolds over hours and days. If you measure both channels with the same short window, radio will always look weaker than it actually is. Extend the measurement window and layer in branded search and web traffic lift data.

Does radio format affect KPI performance?

Yes. Talk, news, and sports formats produce different response patterns than music formats because the listener’s attention level is fundamentally different. A schedule that delivers strong frequency on a music station may still underperform because the listener wasn’t actively engaged during the commercial break. Format should drive the frequency plan, not budget alone.

What CPM should I expect for radio advertising?

Terrestrial radio CPM generally falls in the $4 to $12 range, but the actual number depends on market size, format, daypart, and target demographic. CPM is a useful planning and comparison metric, but for direct response campaigns, cost per lead and cost per acquisition are the KPIs that matter.

How is radio advertising attribution different from digital attribution?

Radio lacks a clickable link, so attribution relies on tracked phone numbers, dedicated URLs, post-exposure search behavior, and web traffic analysis. The biggest difference is timing: digital attribution is near-instant, while radio attribution requires a longer window. Only 8% of a radio spot’s full effect shows up in the first 20 minutes.