Compress WAV files

Shrink a WAV by lowering the sample rate or using one channel instead of two. It stays a WAV.

ConvertingKeep this tab open
file.wavThis file has been deleted
Audio settings
  • Free, with no signup
  • Files deleted after 1 hour
  • No pop-ups or installs

How it works

  1. 1

    Add your WAV

    Drop it onto the box above, or click to choose it.

  2. 2

    Choose how to shrink it

    The settings below start at 22.05 kHz mono, which makes speech files about a quarter of the size. Raise them if you hear a difference.

  3. 3

    Download the smaller WAV

    Save it before the link expires. Converted files are deleted 1 hour after they are made.

How WAV compression works

A WAV is uncompressed, so its size depends on three things: the sample rate, the bit depth and the number of channels. Lowering any of them makes the file smaller.

Going from 44.1 kHz stereo to 22.05 kHz mono cuts the size to about a quarter. That is fine for speech and notes, but music may lose brightness.

This is not losslessLowering the sample rate removes high frequencies, and switching to mono merges the two sides. Keep the original if you may need it again.

The same 4-minute song, by format

WAV at 44.1 kHz, 16-bit, stereo. FLAC varies with the music. Compare WAV and MP3

What you get

  • You choose the trade-off

    Sample rate, channels and bit depth are all in your hands.

  • Still a WAV

    The result opens everywhere a WAV does. No new format to deal with.

  • No signup

    Free conversions allow 3 files a day, up to 100 MB each.

  • Deleted automatically

    Converted files are deleted 1 hour after they are made.

Questions people ask

How much smaller will my file be?
Mono halves the size. Halving the sample rate halves it again. 44.1 kHz stereo to 22.05 kHz mono is about a quarter of the size.
Will it sound worse?
Slightly, for music, because high frequencies are lost. For speech the difference is usually small.
Should I use MP3 instead?
MP3 usually makes a file much smaller than a smaller WAV. Use WAV compression when you still need a WAV.
Is the converter free?
Yes, within limits: 3 files a day, up to 100 MB each, with ads. You don't need an account.
Are my files private?
Converted files are deleted 1 hour after they are made. Nobody else can open your download link. Read the privacy page for how we handle files and logs.
Is it legal?
Only convert files you own or have permission to use. You are responsible for the files you add. Our guide on the legal side explains more.
Why did my WAV conversion fail?
The most common causes are files over 100 MB, damaged files and files that aren't really WAV. Check the file opens on your device and try again.