Podcast Ad Revenue Calculator (CPM)
Estimate podcast sponsorship income from downloads per episode, ad slots and CPM — the standard cost-per-1,000-downloads pricing model.
How it works
Revenue per slot = (downloads ÷ 1,000) × CPM · Per episode = per-slot × slots × fill% · Monthly = per-episode × episodes
Podcast ads are sold on CPM — a flat rate per 1,000 downloads of the episode carrying the ad. Each placement (pre-roll, mid-roll, post-roll) is priced separately, and host-read mid-rolls command the highest CPMs. Fill rate matters: a show rarely sells every available slot, so multiplying by the share you actually place keeps the estimate honest. Because pay scales directly with downloads, growing the audience is worth more than squeezing in extra ad breaks.
Worked example
An episode gets 5,000 downloads with a $25 CPM. Each ad slot earns 5,000 ÷ 1,000 × $25 = $125. With 2 slots at an 80% fill rate that is $125 × 2 × 0.80 = $200 per episode; across 4 episodes a month, roughly $800, or about $9,600 a year.
Frequently asked questions
How is podcast CPM different from a flat sponsorship fee?
CPM scales with your download count, so it rewards growth and protects sponsors from overpaying a small show. Flat fees are simpler but usually get renegotiated toward an implied CPM once a show is established.
What is a typical podcast CPM?
Host-read ads commonly run $18–$50 per 1,000 downloads depending on niche and ad position; dynamically inserted programmatic ads are cheaper, often $5–$20. Business, finance and tech shows sit at the higher end.
Why include a fill rate?
Few shows sell 100% of their inventory. If you have two slots per episode but only sell 80% of them across the month, your realized revenue is 80% of the theoretical maximum — the fill rate captures that gap.
Related calculators
Educational estimate — real earnings vary widely by niche, geography, platform terms and season.