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Audio size calculator

What a recording will weigh at a given bitrate, length and channel count.

Audio Size Calculator
Converted
Output⁦397⁩ chars
Size
3.2 MB
Length
3:30.000
Size           3.2 MB

Length         3:30.000
Kind of file   Compressed, like MP3 or AAC
Channels       Stereo

This is the arithmetic for a constant bitrate: the length, times the bitrate. A variable-bitrate encoder spends fewer bits on quiet passages, so a real file is usually a little smaller than this. The sample rate does nothing here — a compressed file follows its bitrate, not its rate.
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