1
Choose Your Audio File
Choose the WAV file or drop it on the page.
WAV to MP3 Converter
Shrink large WAV recordings into MP3 files about seven times smaller. The WAV is converted in your browser and never uploaded.
Files stay on your device
Drop your WAV here, or choose a file
Converts WAV audio to MP3 at 128 to 320 kbps. It stays on your device.
Choose a fileYour browser converts the file. Nothing is sent to a server.
- No signup, no watermark
- No upload size limit
- About 2 sec for a 47 sec clip
- Works offline once loaded
How to Convert WAV to MP3
2
Pick Quality and Trim
Pick an MP3 bitrate. 320 kbps keeps the most detail for music; 128 kbps is enough for speech.
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Convert and Download
Press Convert to MP3. Preview the result and download it.
What Is a WAV File?
WAV is an uncompressed audio format made by Microsoft and IBM in 1991. It stores every sample as recorded, which is why studios, voice recorders and audio editors use it.
CD-quality WAV (16-bit, 44.1 kHz, stereo) runs at 1,411 kbps, about 10.6 MB per minute. The same minute as a 192 kbps MP3 is about 1.4 MB.
| WAV (CD quality) | MP3 | |
|---|---|---|
| Compression | None | Lossy |
| Bitrate | 1,411 kbps | 128 to 320 kbps |
| Size per minute | About 10.6 MB | About 1 to 2.4 MB |
| Best for | Recording and editing | Listening, sharing, uploading |
Why Convert WAV to MP3
Send It Easily
A 5 minute WAV of about 53 MB becomes a 7 MB MP3 at 192 kbps, small enough for email and messaging apps.
Upload Faster
Podcast hosts, school portals and forms take MP3 and upload it in a fraction of the time.
Save Storage
Keep the WAV master for editing and an MP3 copy for your phone and library.
Which Bitrate for WAV to MP3
For finished music, use 256 or 320 kbps; most listeners cannot tell it apart from the WAV. For voice recordings, lectures and interviews, 128 kbps is plenty.
Keep the original WAV if you may edit the audio again. Editing and re-saving an MP3 loses a little more detail each time.
WAV to MP3: Frequently Asked Questions
How much smaller is MP3 than WAV?
About 7 times smaller at 192 kbps and about 4 times smaller at 320 kbps, compared with CD-quality WAV.
Does WAV to MP3 lose quality?
Yes, some, because MP3 is lossy. At 256 or 320 kbps most people cannot hear the difference from the WAV.
Is my WAV file uploaded to a server?
No. Your browser reads the WAV file and writes the MP3 on your own device. Nothing is sent to MP4toMP3.io or anyone else, and the page keeps working with Wi-Fi off once it has loaded.
Can I convert a very large WAV?
Yes. There is no upload limit. Files up to about 45 minutes convert in one quick pass on a computer; longer files take a slower route.
Can I convert MP3 back to WAV?
Not on this page yet; MP3 to WAV is planned. Converting back would not restore the detail MP3 removed anyway.
Ready to Convert WAV to MP3?
Choose a file at the top. It is free, private and done in your browser in a few seconds.
Convert now