Estimate how big an uncompressed recording will be from its sample rate, bit depth, channel count and length — useful for planning storage and sessions.
Audio File Size Calculator
Size = sample rate × (bit depth ÷ 8) × channels × seconds. This is uncompressed PCM (WAV/AIFF). Compressed formats (MP3, AAC) are far smaller; lossless (FLAC) is roughly 50–60% of this.
How it works
Uncompressed PCM audio size is simply sample rate × (bit depth ÷ 8) × channels × seconds. The tool also shows the bitrate. Compressed formats like MP3 and AAC are far smaller; lossless FLAC is roughly 50–60% of the WAV size.
FAQ
Does this apply to MP3 files?
No — this calculates uncompressed WAV/AIFF (PCM) size. Lossy formats compress audio and are much smaller.
Why is 24-bit/96 kHz so large?
Higher sample rates and bit depths capture more data per second, so file size scales directly with both.