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AUDIO · CONVERT ON YOUR DEVICE

WAV to MP3 converter

Shrink big, uncompressed WAV recordings into MP3s that are easy to share.

Free forever. No signup. No watermark. Files never leave your device.

♧   Files stay on your device

About WAV to MP3 conversion

WAV is uncompressed PCM audio: perfect for recording and editing, but bulky. A stereo CD-quality WAV uses roughly 10 MB per minute, so a one-hour interview or rehearsal can exceed 600 MB — too large for email, chat apps, and many upload forms. The same hour as a 128 kbps MP3 is about 58 MB.

That makes WAV to MP3 the classic conversion for musicians sending demos, podcasters sharing raw takes with collaborators, teachers distributing lecture recordings, and anyone exporting from a voice recorder or DAW. Since the source is lossless, this is the best-case scenario for MP3: you encode once from pristine audio, rather than stacking one lossy format on another.

Because the conversion runs inside your browser, unreleased tracks and private recordings never leave your device. Very long WAVs need enough memory to decode the whole file at once, so on phones a multi-hour file may struggle where a laptop copes fine. Mono recordings stay mono and stereo stays stereo.

How to do it

  1. Press the button above; the Audio tool opens with MP3 already chosen.
  2. Load your .wav file by dragging it in or tapping Choose audio.
  3. Check the duration and sample rate shown under the file name.
  4. Select a bitrate — 192 kbps keeps music sounding close to the WAV.
  5. Click Convert audio, wait for encoding to finish, then download.

WAV to MP3 FAQ

How much smaller will the MP3 be?

At 128 kbps an MP3 is about one-eleventh the size of CD-quality stereo WAV; at 320 kbps it is roughly a quarter.

Will a mono WAV become stereo?

No. The channel count is preserved, so mono recordings stay mono.

Why is conversion slow on a long file?

Encoding happens on your own device's processor. Longer, higher-sample-rate files simply take more work.

Is my recording uploaded?

No. Decoding and MP3 encoding both run locally in the page.

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