Audio File Size Calculator

Your details

Total length of the audio recording.
Number of samples captured per second. 44,100 Hz is CD quality; 48,000 Hz is the professional standard for video and broadcast audio.
Bits used to encode each sample. 16-bit is CD standard; 24-bit is typical for studio recording.
Number of audio channels. Mono = 1, Stereo = 2, 5.1 surround = 6.
Set a lossy bitrate (MP3, AAC, OGG) to see the compressed file size alongside the uncompressed size. Select "Not applicable" to skip.
Uncompressed file size
31.75

WAV / AIFF / PCM size for the entered parameters

Uncompressed bitrate1,411kbps
Compressed file size2.88
Compression ratio11
Space saved by compression90.9%
Uncompressed (WAV/AIFF)31.75
Compressed (MP3/AAC)2.88

Uncompressed size: 31.75 MB vs. 2.88 MB compressed.

  • Your recording uses 44,100 Hz sample rate, 16-bit depth, and 2 channels - CD quality.
  • The raw uncompressed bitrate is 1,411.2 kbps. At this rate, 1 minute of audio uses 10.58 MB.
  • Compressing to 128 kbps reduces the file to 2.88 MB, saving 90.9% of storage space.
  • This file is manageable for most projects. A typical 4 GB SD card holds thousands of similar files.

Next stepFor streaming and podcasts, 128-192 kbps AAC or MP3 is the sweet spot between quality and size. For archiving, keep the uncompressed master and distribute compressed copies.

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