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Audio Calculators

Audio File Size Calculator

Audio file size from bitrate or from sample rate, bit depth and channel count.

Enter values

Results update as you type.

Result

File size

61.8 MB

In megabytes
61.798
Bitrate
192 kbps
Size per minute
1.37 MB
Duration
45 min 0 s
Hours per GB
12.43
As MP3 at 192 kbps
61.8 MB

About the Audio File Size Calculator

Audio file size from bitrate or from sample rate, bit depth and channel count.

Also known as: mp3 size calculator, wav file size, audio storage calculator, podcast file size.

How to use this calculator

  1. Enter format, channels, duration and the other fields.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

uncompressed bytes = sample rate × bit depth × channels × seconds ÷ 8

Worked example

Using the values pre-filled in the calculator above:

  • Format: Compressed (MP3, AAC)
  • Bitrate = 192 kbps
  • Channels: Stereo
  • Duration = 45 minutes

the calculator returns:

  • File size: 61.8 MB
  • In megabytes: 61.798
  • Bitrate: 192 kbps
  • Size per minute: 1.37 MB