Convert audio online
Change an audio file between MP3, WAV, OGG, M4A and FLAC.
Different programs insist on different formats: editors want WAV, phones want M4A, everything plays MP3. Pick what you need and the file is converted on your own device.
Formats and settings
MP3 and M4A come out at 192 kbps, OGG as Vorbis at quality 5, WAV as uncompressed 16-bit PCM and FLAC lossless. Almost anything with sound goes in: MP3, WAV, OGG, M4A, AAC, FLAC and Opus, Telegram and WhatsApp voice notes, or an MP4 or WebM video, whose picture is dropped.
One file at a time, up to 500 MB. The first conversion downloads the audio engine, about 10 MB, once; after that it comes from your browser’s cache.
Common problems and fixes
The WAV file is enormous. Uncompressed stereo takes about 10 MB for every minute; if the program you are feeding accepts it, FLAC sounds identical and is far smaller.
A player will not open the file. Some players, Apple’s among them, do not handle OGG; M4A and MP3 play everywhere.
The converted track is quieter than the rest of a playlist. Conversion keeps the original volume on purpose; to even it out, run it through Normalise audio volume.
How to use it
- Add the audio file.
- Choose the format you need.
- Press Convert audio and download it.
Why use this tool
Completely private
Everything runs inside your browser. Your files and text are never sent to a server.
Free, with no limits
No sign-up, no watermarks and no cap on how many times you can use it.
Instant results
There is no upload or queue to wait for, so results appear as fast as your device can work.
Works on any device
Runs in any modern browser on phone, tablet or desktop. Nothing to install.
Frequently asked questions
- Which format should I pick?
- MP3 if anything will play it. WAV if a program demands uncompressed audio, remembering it is about ten times larger. M4A for Apple devices. FLAC to keep every detail at roughly half the size of WAV.
- Does converting lose quality?
- Going to MP3, OGG or M4A, yes, a little, once. Going to WAV or FLAC loses nothing, but it also cannot restore what an earlier compression already removed.
- Can I convert a video file here?
- Yes. Drop in an MP4 or WebM and the sound comes out in the format you chose; the picture is discarded.
- Is there a size limit?
- Only what your browser can hold. Audio is far smaller than video, so an hour-long recording is no trouble.
- How do I convert a voice message to MP3?
- Drop the .ogg, .oga or .opus file from Telegram or WhatsApp here and choose MP3. It then plays on any phone or computer and is small enough to send back.
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