Audio File Size Calculator
Calculate audio file size from duration, sample rate, and bit depth.
Compare WAV, FLAC, MP3, and AAC formats.
File Size Estimate
Uncompressed audio file size (WAV/AIFF):
Size (bytes) = Sample Rate × Bit Depth/8 × Channels × Duration
Common sample rates:
- 44,100 Hz (CD quality)
- 48,000 Hz (video/broadcast standard)
- 96,000 Hz (high-resolution audio)
- 192,000 Hz (ultra high-resolution)
Common bit depths:
- 16-bit: CD quality (96 dB dynamic range)
- 24-bit: Professional recording (144 dB dynamic range)
- 32-bit float: DAW processing standard
Compression ratios (approximate):
- WAV: Uncompressed — 100% of calculated size
- FLAC: Lossless — ~50–60% of WAV
- MP3 320kbps: Lossy — ~20% of WAV
- MP3 128kbps: Lossy — ~8% of WAV
- AAC 256kbps: Lossy — ~16% of WAV
Quick reference (1 minute, stereo):
- WAV 44.1kHz/16-bit: ~10 MB
- WAV 96kHz/24-bit: ~33 MB
- MP3 320kbps: ~2.4 MB