WAV to MP3 Converter
Convert WAV to MP3 online for free: nothing to install, no watermark, files encrypted in transit and deleted automatically after conversion.
Advanced options
Drag & drop your WAV file here, or
How to convert WAV to MP3 in 3 steps
- 1
Upload your WAV file
Drag and drop or select the WAV file you want to convert.
- 2
Choose MP3 as output
The output format is pre-selected for you — just confirm and start the conversion.
- 3
Download your file
Once processing finishes, download your converted MP3 file instantly.
Converting WAV to MP3: what to know
When you need it
WAV recordings from audio recorders, music software and voice memo apps are large, about 10 MB per minute. MP3 makes them small enough to email, upload to a podcast host or keep on a phone, and it plays on everything.
What to expect
At 192 or 320 kbps most listeners can't tell the MP3 from the WAV, at roughly a seventh to a quarter of the size. MP3 is lossy, though: each further edit and re-save costs a little quality, so do your editing on the WAV.
Tip: Archive the WAV and share the MP3. You can always make a new MP3 at another bitrate, but you can't get the WAV back from an MP3.
WAV vs MP3: what is the difference?
| WAV | MP3 | |
|---|---|---|
| Full name | Waveform Audio File Format | MPEG-1 Audio Layer III |
| Type | Uncompressed audio | Compressed audio |
| Compression | None | Lossy |
| Developed by | Microsoft & IBM | Fraunhofer IIS / MPEG |
| File extension | .wav | .mp3 |
What is WAV?
WAV stores audio as uncompressed PCM, exactly as it was recorded. That makes it the standard for recording, editing and mastering, where no quality can be lost, but a WAV file is about ten times larger than the same audio in MP3.
What is MP3?
MP3 is the classic compressed audio format. It removes sounds the ear barely notices to shrink files to roughly a tenth of CD size, and it plays on every phone, car stereo and music app, which is why it remains the default for music and podcasts.
Tips for converting WAV to MP3
- Converting a compressed file such as MP3 to a lossless format does not restore detail already removed; it only makes the file larger.
- For music, a lossless source (WAV or FLAC) gives the best result when you convert to MP3.
- Check that your player, car stereo or editing app supports MP3 before converting a whole library.
- Keep the original WAV file as a backup until you are happy with the converted audio.
Frequently asked questions
- How do I convert WAV to MP3 online?
- Upload your WAV file above, select MP3 as the output format, and click Convert. ConvertFastHub processes the file in the cloud and gives you a download link — no software installation required.
- Is it free to convert WAV to MP3?
- Yes. Free accounts get 10 conversions every 24 hours with files up to 50MB. For unlimited conversions, larger files up to 1.5GB, and priority processing, upgrade to ConvertFastHub Pro.
- Is my file safe when I convert it?
- Files travel over an encrypted connection, are scanned automatically for malware (files up to 200 MB), are processed in an isolated worker and are deleted automatically: after 1 hour without an account, 24 hours with a free account, or 7 days with Pro.
- Can I convert WAV to MP3 on my phone?
- Yes. The converter runs in the browser and the work happens on our servers, so it works the same on Android, iPhone, tablets and computers — there is no app to install.
- Do I need an account?
- No. You can convert without signing up; results are then kept for 1 hour. A free account keeps them for 24 hours and shows your conversion history.