Audio file size calculator

Estimate an uncompressed PCM file or a constant-bitrate compressed stream from its format and duration.

Estimated data sizeEnter values to calculate

Audio payload before container overhead

PCM size multiplies sample rate, bytes per sample, channels and duration. Constant-bitrate size multiplies bits per second by duration. Headers, tags, artwork and codec behavior can change the final file.

MB and MiB are both shown

MB uses 1,000,000 bytes. MiB uses 1,048,576 bytes. Storage vendors and operating systems may display different units for the same byte count.

More tools

Tap tempo

Estimate BPM from the average gap between your taps.

Delay time

Convert BPM to straight, dotted and triplet times.

Reverb timing

Build tempo-synced pre-delay and decay spans.

Samples & milliseconds

Convert samples and time at a selected sample rate.

Semitone calculator

Measure or apply a musical frequency interval.

Speaker impedance

Combine two to four speaker loads in series or parallel.