Podcast Hosting Bandwidth Calculator

The calculator assumes each back catalog episode only generates about 5% of the downloads a brand-new episode gets, reflecting the reality that most podcast listening concentrates on recent episodes while older ones accumulate a much smaller trickle of downloads from search, recommendations, or new listeners working through the archive. A catalog with 200 episodes therefore adds meaningfully less bandwidth than 200 new-episode-equivalent downloads would suggest.

Storage reflects the actual disk space your audio files occupy on the host's servers — it doesn't grow with how many times a file gets downloaded, only with how many files exist and how large they are. Bandwidth, by contrast, is billed per transfer, so a single popular episode downloaded thousands of times consumes proportionally far more bandwidth than storage.

Bandwidth scales directly with file size, so cutting your average episode file size — by lowering bitrate or trimming dead air, for example — reduces bandwidth for every single download, new and back-catalog alike, proportionally. A show near its hosting plan's bandwidth cap often has more room to maneuver by optimizing file size than by trying to reduce downloads, which usually isn't a goal anyway.

Hosting plans are almost always billed and capped on a monthly basis, so the monthly bandwidth figure is the one to compare directly against your plan's stated limit to check for overage risk. The annual bandwidth figure is useful mainly for budgeting or comparing plans priced by yearly commitment, not for checking whether you'll hit a monthly cap.