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Audio File Size Calculator

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About Audio File Size Calculator

Calculate audio file sizes from duration, sample rate, bit depth, and channels. Compare across WAV, FLAC, MP3, AAC, and Opus.

How It Works

Enter duration and audio specs to see uncompressed WAV size and estimates for FLAC, MP3, AAC, Ogg, and Opus.

Frequently Asked Questions

How big is one minute of CD audio?
~10.1 MB WAV, ~6 MB FLAC, ~2.4 MB MP3 (320kbps), ~960 KB MP3 (128kbps).
What sample rate should I use?
44.1 kHz for music, 48 kHz for video, 96+ kHz for audiophile or archival.