How to use this calculator
Choose the stored sample width rather than just the number of valid signal bits. Enter all recorded channels and the total duration. This estimates raw pulse-code-modulated samples, such as the payload of an uncompressed WAV file.
The formula
A worked example
An hour of stereo audio at 48,000 Hz and 24 stored bits needs 1,036,800,000 bytes: 1.0368 GB or 988.77 MiB. One minute at 44,100 Hz and 16-bit stereo is 10.584 MB.
Assumptions & limitations
Excludes container headers, metadata, project files, backups, and compression. A signal with 20 valid bits stored in a 24-bit container uses 24 bits of storage. Compressed formats such as MP3 and FLAC need different models.
Common questions
Why are GB and GiB different?
GB uses powers of 1,000 while GiB uses powers of 1,024. They describe the same byte count with different unit sizes.
Can I use this for MP3?
No. Use a bitrate-based model for compressed audio. This tool computes uncompressed sample data.
Supporting reference
The method above states this calculator’s assumptions. This reference provides related definitions and technical context.
Microsoft: WAVEFORMATEX sample and byte definitions ↗Formula and worked example checked against automated test cases. About our methodology.