How to use it
- Drop your WAV files onto the page.
- Choose the bitrate (192 kbps for music, 96–128 kbps for voice).
- Optionally tick Mono for speech.
- Click Convert to MP3 and save the result.
Why convert WAV to MP3?
WAV stores uncompressed audio: CD-quality stereo (16-bit, 44.1 kHz) takes about 10 MB per minute. That's ideal for recording and editing, but awkward for email, messaging apps, websites and phones. An MP3 at 192 kbps takes about 1.4 MB per minute, roughly a seventh of the size, and at 128 kbps about a tenth, while still sounding very close to the original.
Typical cases: sending a band demo, uploading a podcast episode, putting recordings from a field recorder or DAW on a phone, or archiving a folder of voice recordings.
How much smaller will it be?
| Format | Size per minute (stereo) | 60-minute recording |
|---|---|---|
| WAV, 16-bit, 44.1 kHz | about 10.1 MB | about 605 MB |
| MP3, 320 kbps | about 2.4 MB | about 144 MB |
| MP3, 192 kbps | about 1.4 MB | about 86 MB |
| MP3, 128 kbps | about 1 MB | about 58 MB |
| MP3, 96 kbps mono | about 0.7 MB | about 43 MB |
24-bit or 48 kHz WAV files are even larger, so the savings are bigger. The MP3 sizes depend only on the bitrate you pick.
Choosing the quality
- 192 kbps (default): good-quality music, a safe all-round choice.
- 256–320 kbps: for finished music you care about, or when the MP3 might be edited again.
- 128 kbps: background music, demos, or when size matters more.
- 96 kbps + Mono: speech, interviews, lectures, voice notes.
Keep your original WAV if you might edit or master the audio later. MP3 is a delivery format; converting the MP3 back to WAV won't restore what was removed.
Common uses
- Band demos and rehearsal recordings from a field recorder or audio interface, to share by email or messaging.
- Podcast episodes exported from an editor as WAV, before uploading to a host that prefers MP3.
- Voice recordings from a dictaphone that saves WAV, to keep on a phone without filling it up.
- Sound libraries and old CD rips you want on a player or in a car that reads MP3 from a USB stick.
If you need a section rather than the whole file, convert first and then cut it with the MP3 cutter; to combine several takes into one file, use merge MP3.
Batch conversion and privacy
Add a whole set of WAV files at once. Each MP3 keeps the original file name, and two or more results come back in a single ZIP. A large WAV takes a few seconds to encode; a progress bar shows how far it has got.
Everything happens in your browser, so nothing is uploaded and you don't wait for a 600 MB file to transfer. Very large files (over about 200 MB) need plenty of memory and may fail on a phone; use a computer for those. To go the other way, use MP3 to WAV.
Frequently asked questions
Does converting WAV to MP3 lose quality?
Yes, slightly, because MP3 is lossy. At 192 kbps or higher, most people can't hear the difference on typical speakers and headphones.
What's the best bitrate for WAV to MP3?
192 kbps for most music, 256–320 kbps for archiving or critical listening, and 96–128 kbps for speech.
Can I convert 24-bit or 48 kHz WAV files?
Yes. The browser decodes them and the MP3 encoder resamples as needed.
Is there a file size limit?
No server limit, because nothing is uploaded. Very large files depend on your device's memory.
Can I convert many WAV files at once?
Yes. Select or drop several files; the MP3s download together in one ZIP.
Last updated: November 12, 2026