Convert WAV to MP3 and Make It 10x Smaller

WAV is uncompressed: a one-hour field recorder or studio file can be 600MB. As a 192 kbps MP3 the same hour is about 85MB and sounds the same to most ears. Convert it here, on your own device, and the original file is never uploaded anywhere.

Your file never leaves your device. Nothing is uploaded.

Drop an audio or video file here

Drop a .wav (or .aiff) up to 500MB. It never leaves your device.

Conversion runs on FFmpeg, compiled to WebAssembly, inside this browser tab. Licences and source

How it works

  1. Pick a file. Drag in a recording, a voice memo or a video. It opens in this tab; nothing is sent to a server.
  2. Choose the format. MP3 or M4A for small files that play anywhere, WAV or FLAC when you need lossless audio, OGG for the web. Set the quality if you like.
  3. Download it. Your browser converts the file and saves the result to your device. If you need a transcript, send the new file to the free Wave AI transcription tool in one click.

Common questions

What MP3 bitrate is best for a WAV?

256 or 320 kbps for music you care about, 192 kbps for general listening, 128 kbps for speech. Keep the WAV if you'll edit the audio later; MP3 is for sharing and listening.

Where is my WAV file sent?

Nowhere. The converter runs inside your browser tab, so the file is read and converted on your own device and saved straight back to it. It is never uploaded to Wave or anyone else, and we never see its name or contents.

My WAV is bigger than 500MB. What now?

The browser can't safely hold more than that. Trim the recording into parts with any audio editor, or record in a compressed format to begin with.

Should I convert WAV to MP3 before transcribing?

If the WAV is over 200MB, yes: the MP3 fits the free transcription tool's limit and uploads far faster. Transcription accuracy is the same, because speech recognition doesn't need lossless audio.

Related: Free Audio Converter That Never Uploads Your File · Free audio transcription · Free YouTube Transcript Generator · Convert MP4 to MP3 Without Uploading the Video · Video to MP3: Extract the Audio From Any Video · Convert M4A to MP3 in Your Browser · Convert MP3 to WAV for Editing and Playback · Convert OGG and Opus Voice Notes to MP3 · Convert WebM to MP3 Right in Your Browser · Convert MOV to MP3: Audio From iPhone Videos

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