Work out podcast file size instantly with clear inputs, formula shown and shareable results.
File size is bitrate in kilobits per second times the duration in seconds divided by eight thousand to reach megabytes, and hosting bandwidth is that size times downloads. Speech encodes cleanly at 64 to 96 kbps mono, so halving from a 128 kbps stereo default halves hosting costs with almost no audible loss.
File size
MB = bitrate kbps x minutes x 60 / 8000
Bandwidth
GB = episode MB x downloads / 1000
MB = bitrate kbps x minutes x 60 / 8000. File size is bitrate in kilobits per second times the duration in seconds divided by eight thousand to reach megabytes, and hosting bandwidth is that size times downloads.
Speech encodes cleanly at 64 to 96 kbps mono, so halving from a 128 kbps stereo default halves hosting costs with almost no audible loss.
Enter episode length, encoding bitrate, expected downloads. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.