Audio File Size Calculator

Estimate audio file sizes for uncompressed (WAV/AIFF), lossless (FLAC/ALAC), and lossy (MP3/AAC/OGG) formats with multitrack support.

Results

Visualization

How It Works

Uncompressed audio (WAV/AIFF): size = sample_rate × bit_depth/8 × channels × duration. A 24/48 stereo minute = 16.5 MB. FLAC/ALAC compress losslessly to ~50-70% of WAV size — identical quality, smaller files. MP3/AAC at 320 kbps is roughly 10% of WAV size but loses some detail (transparent for most listeners above 256 kbps). For a 16-track, 3-hour session at 24/48: ~25 GB WAV, ~15 GB FLAC. Always record in WAV/AIFF — convert to lossy only for distribution.