Drop in a WAV file and get a MP3 back in seconds. Free, no account, and nothing is kept on our server.
Convert audio files between MP3, WAV, FLAC, AAC, OGG, Opus, and more. Extract audio from video. Powered by FFmpeg — free, no installation.
Drag and drop an audio file here
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Supported formats: MP3, WAV, FLAC, AAC, OGG, OPUS, WMA, M4A, AIFF, AC3, AIFF, AMR
Also: MP4, MKV, AVI, MOV (extracts the audio track) · Max 512 MB
The usual reason is size. A thirty-megabyte recording becomes four or five, small enough to email, upload or fit a few hundred tracks on a phone.
WAV stores raw PCM samples with no compression whatsoever. Nothing is thrown away when the file is written and nothing is reconstructed when it is played, so editors, mastering chains and speech-recognition tools expect it. The price is size: CD-quality stereo runs at 1411 kbit/s, roughly 10 MB for every minute of audio.
MP3, formally MPEG-1 Audio Layer III, was standardised in 1993 after years of work at Fraunhofer IIS. It discards sound the ear is unlikely to notice, which is how a three-minute track fits into a few megabytes instead of thirty. Nothing else comes close to its reach: every phone, browser, car stereo and cheap player made in the last two decades reads it. That universality, not sound quality, is why it is still the safe default today.
| WAV | MP3 | |
|---|---|---|
| Released | 1991 | 1993 |
| Developed by | Microsoft and IBM | Fraunhofer IIS / MPEG |
| Compression | uncompressed | lossy |
| Typical bitrate | 1411 kbit/s (CD) | 128-320 kbit/s |
| Three-minute track | about 30 MB | 3-7 MB |
| Quality ceiling | Exactly the source | Good, not transparent |
| Best suited to | Editing, mastering, speech tools | Sharing, phones, car stereos |
| Playback support | Universal on desktop | Universal |
Yes, and the loss is permanent. MP3 compression works by discarding detail, and converting back to WAV later will not bring it back. Keep your original if you may need to edit or re-encode.
A normal song finishes in a few seconds. Conversion runs on our server rather than in your browser, so the slow part is usually the upload, not the work itself. Long recordings such as lectures or podcasts take proportionally longer.
Your file is uploaded to our server because the conversion runs there. A cleanup task runs every hour and deletes anything older than an hour, so nothing you upload survives more than about two hours. We do not open your files, we do not keep copies, and no account is needed to use the converter.