Convert WAV to MP3 Online

Pick a WAV file and convert it to a much smaller MP3 on your device. Dramatically reduce file size while preserving audio quality.

How it works

  1. Upload your WAV audio file. Drag your uncompressed WAV file into the audio converter. Standard PCM WAV at any common sample rate or bit depth is accepted; nothing is uploaded.
  2. Select MP3. Choose MP3 as the output format. DomeScribe encodes it at a high variable bitrate (around 190 kbps), which is transparent for speech and most music. For a specific bitrate — 64, 128, 192, or 320 kbps — use the audio compressor instead.
  3. Convert. Click Convert. Audio encoding is quick even on modest hardware — a one-hour WAV typically takes well under a minute.
  4. Save your MP3. Expect a file roughly ten times smaller than the WAV. Save it with a free account and share it by email, messaging apps, or podcast hosts.

Converter at a glance

Video formats
MP4, MOV, AVI, WebM, MKV, FLV — optional resolution (4K to 360p) and frame rate (60/30/24 fps)
Audio formats
MP3, WAV, FLAC, AAC, OGG, M4A
Privacy
Runs 100% in your browser (WebAssembly) — your file is never uploaded to a server
Speed
No upload wait — processing starts as soon as the in-browser engine loads (~31 MB, cached after the first run)
File size
Limited by your device's memory — up to about 500 MB works reliably
Watermark
None
Limits
Free — no monthly limit; runs on your device (a free account is needed to save the file)

Frequently asked questions

How much space will I save converting WAV to MP3?

WAV files are uncompressed, so they are extremely large. A typical 4-minute song at CD quality takes about 40 MB as WAV and roughly 5–6 MB as the high-quality variable-bitrate MP3 DomeScribe produces — about a 7–8x reduction.

Is there any quality loss when converting WAV to MP3?

MP3 is a lossy format, so some audio data is discarded. At the bitrate DomeScribe uses (around 190 kbps VBR) the loss is inaudible to most people. For critical listening or archival, convert to FLAC instead, which compresses without any quality loss.

Can I convert a WAV recorded from a microphone or voice memo?

Yes. DomeScribe handles WAV files from voice recorders, DAWs, phone apps, or studio equipment. The output MP3 is ready to share via email or messaging, or to upload to a podcast host.

Can I pick the MP3 bitrate?

The audio converter uses one high-quality variable-bitrate setting. If you want a specific bitrate — 64 kbps for voice, 128, 192, or 320 kbps — use DomeScribe's audio compressor, which also runs in your browser.

Is the WAV file uploaded to a server?

No. The conversion runs entirely in your browser; the WAV never leaves your device and there is no monthly limit.

Related tools

  • Free Online Video & Audio Converter — Convert video and audio files between formats in your browser — MP4, WebM, MOV, MKV, AVI, MP3, FLAC, WAV and more. Free, no monthly limit, nothing is uploaded.
  • Convert FLAC to MP3 Online — Convert FLAC files to MP3 free, in your browser. Shrink lossless audio to a portable MP3 without noticeable quality loss — nothing is uploaded.
  • Convert MP4 to MP3 Online — Convert MP4 video to MP3 audio free, in your browser. Pull the audio track out of an MP4 file on your device and save it as MP3 — nothing is uploaded.
  • Compress Audio Files Online — Compress MP3, WAV, FLAC, M4A, and OGG files in your browser. Pick 64–320 kbps and shrink the file — free, no monthly limit, nothing is uploaded.