Key stat: For podcasts that run under 15 minutes, an average of 21.8% of the play time is ads, according to an August 2025 report from Magellan AI.

Beyond the chart:

• Some 22% of US podcast listeners made a purchase after hearing an ad, according to February 2025 data from Sounds Profitable and Signal Hill Insights.
• Almost 6 in 10 (59%) US podcast listeners are most likely to pay attention to ads that are casually mentioned during the show, per May 2025 data from the National Research Group.

Use this chart: Advertisers can use this chart as justification to target short-form podcasts for high ad density and strong recall, especially for time-sensitive campaigns. It can inform balanced buys across episode lengths to match goals—shorter shows for quick impact, longer ones for storytelling and brand-building.

Related EMARKETER reports:

• US Creator Podcast Revenues Forecast 2025 (EMARKETER subscription required)
• Gen Z Technology and Media Preferences 2025 (EMARKETER subscription required)

Methodology: Data is from the August 2025 Magellan AI "Q2 2025 Podcast Advertising Benchmark Report." A sample of 94,938 US-based podcast episodes was analyzed during April-June 2025. Software detects ads within episodes, and a model determines metrics based on factors such as number/variety of ads, estimated number of downloads, and estimated CPMs. Magellan AI is a podcast advertising measurement platform.