PCM Audio File Size Calculator
Estimate uncompressed audio payload from sample rate, bit depth, channels and duration.
Your result
EVERYDAYEnter your values and select calculate.
On this page How it works & practical examples
How to use the PCM Audio File Size Calculator
Choose the sample representation used by the file. Every channel stores a sample at each sample time, so adding channels increases payload proportionally. This tool describes uncompressed PCM rather than a compressed audio codec.
The calculation
Worked example
60 seconds of 48 kHz, 24-bit stereo PCM has a 17.28 MB payload before headers.
Assumptions and limits
Headers, metadata, container padding and implementation-specific sample storage are omitted. Formats storing 24-bit samples in 32-bit words need a corresponding storage-width assumption.
Common questions
Can I estimate MP3 size here?
Use its encoded bitrate rather than PCM sample dimensions; this tool models uncompressed audio.
Does stereo double mono payload?
At identical sample rate and bit depth, yes: it stores two channels instead of one.