Free · No upload · No sign-up
Convert WAV to MP3
Shrink uncompressed WAV audio to portable MP3 — 128 to 320 kbps, entirely in your browser.
WAVMP3
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Drop your .wav file here
Converted to MP3 in your browser.
Why this tool
Up to 10× smaller
A 1-minute stereo WAV is ~10MB. The same at MP3 192 kbps is ~1.4MB — ideal for podcasts, email, and iOS playback.
Private by default
Conversion runs in your browser via ffmpeg.wasm. No upload, no retention.
LAME under the hood
Industry-standard MP3 encoder — Balanced preset is transparent for most music at 192 kbps.
How to convert WAV to MP3
- 1Drop your .wav file above.
- 2Pick a bitrate preset: Fast (128 kbps), Balanced (192 kbps), High (320 kbps).
- 3Click Convert. LAME encoder runs in your browser.
- 4Download the .mp3 — roughly one-tenth the size of the source WAV.
Frequently asked questions
- Which bitrate should I pick?
- 192 kbps (Balanced) is the sweet spot for music and voice — virtually indistinguishable from the WAV source for most listeners. 320 kbps (High) for mastering reference or audiophile distribution. 128 kbps (Fast) for spoken-word content where size matters.
- Is MP3 lossy?
- Yes — MP3 discards information the ear can't perceive. For archival or further editing, keep the WAV and convert to MP3 only for delivery.
- Does Clapr upload my file?
- No. Conversion runs entirely in your browser.
- Will it keep the sample rate and channels?
- Yes — the output mirrors the source (e.g., 44.1 kHz stereo stays 44.1 kHz stereo).
- What's the max file size?
- Up to 4GB. WAV files rarely approach that even for long recordings.