tools
Audio file size calculator
Estimate compressed audio storage from bitrate and duration.
Last checked:
Inputs are editable planning assumptions, not measured averages. Results exclude pauses unless your selected rate includes them.
Calculation method
Decimal megabytes = minutes × 60 × kilobits per second × 1,000 ÷ 8 ÷ 1,000,000. This excludes container overhead and is approximate for variable bitrate audio.
Change the example inputs to match your file or quote. A calculated estimate does not establish the actual billed total or final file size.
Sources
- Digital audio concepts · MDN · Checked 2026-10-30