Music and Audio Math: BPM Delay, Note Frequency and Decibels
The calculations behind music production — delay times locked to the beat, note frequencies, how decibels fall with distance, sample rate and bit depth, and sizing audio files.
Audio File Size Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
File size (uncompressed)
10.58
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Audio File Size Calculator
The Audio File Size Calculator works out your file size (uncompressed) in an instant. Enter duration, sample rate and bit depth and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the duration.
- Enter the sample rate.
- Enter the bit depth.
- Enter the channels.
- Read off your file size (uncompressed) — the calculator updates automatically, with no button to press.
Formula
The Audio File Size Calculator uses the formula:
File size (uncompressed) = Duration × Sample rate × Bit depth × Channels ÷ 8 ÷ 1000000
Worked example
For example, with duration of 60 seconds, sample rate of 44,100 Hz, bit depth of 16 bits and channels of 2, the file size (uncompressed) is 10.58.
| Duration | 60 seconds |
|---|---|
| Sample rate | 44,100 Hz |
| Bit depth | 16 bits |
| Channels | 2 |
| File size (uncompressed) | 10.58 |
|---|
Results are estimates for educational use, not professional advice.
Frequently asked questions
Multiply duration × sample rate × bit depth × channels, divide by 8 for bytes, then by a million for MB. One minute of CD-quality stereo is about 10.6 MB.
CD audio is 44,100 Hz, 16-bit, 2 channels. That is the default and a common reference for uncompressed audio.
MP3, AAC and similar formats compress audio, cutting size dramatically. This calculator estimates uncompressed (WAV/PCM) size.
Yes. Doubling the sample rate or bit depth doubles the file size, since more data is stored per second.
Enter the duration. Enter the sample rate. Enter the bit depth. Enter the channels. Read off your file size (uncompressed) — the calculator updates automatically, with no button to press.
Related guides
Audio File Size Table: File size (uncompressed) by Duration
Reference table of file size (uncompressed) for Audio File Size across a range of duration values — exact, engine-computed figures you can read off at a glance.
How to Calculate Audio File Size: Formula, Steps & Examples
Learn how to calculate Audio File Size — the formula explained step by step, with worked examples and a free calculator to check your answer.