Audio ToolsPrivate by design
Audio File Size Estimator
Enter a duration and either a bitrate or sample rate/bit depth/channel count to estimate the resulting file size.
How to use this tool
- 1Choose compressed (bitrate-based) or uncompressed PCM.
- 2Enter the duration and the relevant settings.
- 3See the estimated file size in MB.
Frequently asked questions
Why is my actual file a bit different from the estimate?+
This estimates raw audio data size — actual files also include format headers, metadata tags, and (for compressed formats) variable bitrate fluctuations, which can shift the size slightly.
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