WAV to MP3 Converter
Drop a WAV, get an MP3 that's roughly 10× smaller at transparent quality. Runs in your browser — nothing is uploaded.
Drop your WAV file here
Converts to .mp3 — stays on your device
Why convert WAV to MP3?
- Shrinking podcast masters exported from Audacity, Reaper, or Logic Pro for upload to Buzzsprout, Transistor, or Libsyn hosts.
- Compressing interview recordings from a Zoom H5, Tascam, or Rode NT-USB so they fit in email attachments under 25 MB.
- Preparing voice memos or sermon recordings for SoundCloud, Spotify, or Anchor where MP3 uploads process faster than WAV.
- Reducing the size of course audio for Teachable, Thinkific, or Kajabi classrooms where WAV inflates storage quotas.
- Converting raw voiceover recordings for a freelance client to MP3 for rough cuts, keeping the WAV master for final delivery.
- Uploading audiobook chapters to ACX or Findaway Voices where the final deliverable is often MP3 for proofs.
How our converter works
Your WAV is decoded and re-encoded as 192 kbps constant-bitrate MP3 at 44.1 kHz — the bitrate most podcast hosts and streaming platforms use as their sweet spot for size vs. quality. A 10-minute WAV (~100 MB) typically becomes a ~14 MB MP3. Conversion runs on a WebAssembly build of ffmpeg in your browser, which means sensitive interviews, unreleased music, and under-NDA client recordings never leave your device.
WAV vs MP3 — what's the difference?
| Feature | WAV | MP3 |
|---|---|---|
| Compression | None — uncompressed PCM | Lossy — MPEG Layer III |
| File size | ~10 MB per minute at CD quality | ~1.4 MB per minute at 192 kbps |
| Editing | Perfect for mixing and mastering | Lossy; avoid re-encoding repeatedly |
| Universal playback | Yes, but huge | Yes, and small |
| Best for | Raw recording, editing masters | Sharing, streaming, podcasts |
Frequently asked questions
Will I lose audio quality?
A small, usually inaudible amount. At 192 kbps MP3, the loss is transparent for speech and very close to lossless for music. If you need perfect fidelity, keep the WAV as your master and use MP3 only for distribution.
What bitrate does the output use?
192 kbps constant bitrate at 44.1 kHz — the sweet spot most podcast hosts, streaming platforms, and audiobook distributors use. It's roughly 1.4 MB per minute of audio.
Can I get a higher bitrate MP3?
Not from this tool — we use 192 kbps for all conversions, which is transparent for 99% of listening scenarios. For mastering-grade output, keep the WAV or export to FLAC from your DAW.
Are my recordings uploaded?
No. The conversion runs entirely in your browser via WebAssembly. Files never touch a server — which is why journalists, therapists, and lawyers use this for privileged recordings.
Is there a file size limit?
Around 500 MB for the source WAV — that's a CD-quality recording over 45 minutes long. For multi-hour masters, a desktop tool like Audacity or ffmpeg handles larger files more reliably.
What about 24-bit or 96 kHz WAV files?
They convert fine — the encoder downsamples to 44.1 kHz / 16-bit before compressing. If the source is a studio master, this is the final-delivery step, not an editing step.
About the WAV format
WAV (Waveform Audio File Format) is Microsoft and IBM's 1991 uncompressed audio standard — essentially raw PCM samples wrapped in a simple header. It's the format DAWs, field recorders, and audio interfaces save to because it preserves every sample with zero processing. The tradeoff is size: a single CD-quality stereo minute is roughly 10 MB. MP3 (MPEG-1 Audio Layer III) shipped in 1993 with the opposite priority — psychoacoustic compression throwing away audio information humans can't easily hear, resulting in files 10–12× smaller at transparent quality. For anything that leaves the studio — podcast uploads, client proofs, distribution masters — MP3 is still the universal delivery format three decades later.