Podcast File Size Calculator

Find out exactly how big your podcast episode file will be at any MP3 bitrate.

MP3 bitrate:

Episode length (minutes):

Episodes per month:

How to use

Pick a bitrate, enter the episode length and click Calculate. Everything runs in your browser — nothing is uploaded or stored.

What bitrate should a spoken-word podcast use?

64–96 kbps mono is standard; music-heavy shows use 128–192 kbps.

Why is my file bigger than estimated?

ID3 artwork and chapter markers add a little on top of the audio data.

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