Skip to content
HNarzędzia
en
Categories

WAV to MP3 converter - make large WAV files up to 10 times smaller

A CD-quality WAV takes about 10.6 MB per minute. Convert it to MP3 and it fits in an email, on a phone or on a USB stick - and the conversion happens entirely on your device.

  • Free
  • No sign-up
  • Private
  • Runs locally

Drag & drop files here

or click to choose from your device

WAV file · conversion happens locally in your browser

How to convert WAV to MP3

  1. 1.

    Add a WAV file

    Drop a .wav file onto the area above or click to browse your device.

  2. 2.

    Set the quality

    Pick a bitrate - 192-256 kb/s for music, 96-128 kb/s for speech. Turn on Mono for voice recordings if you like.

  3. 3.

    Click "Convert to MP3"

    A progress bar shows the encoding; you can cancel at any time.

  4. 4.

    Download the MP3

    Play the result, compare sizes and download the file with its original name and an .mp3 extension.

How much space you save

WAV stores raw PCM: 44.1 kHz, 16-bit stereo runs at 1,411 kb/s. MP3 throws away detail the ear barely notices, so the same 4-minute song shrinks dramatically:

Format4-minute songSaving
WAV (CD quality)about 42 MB-
MP3 320 kb/sabout 9.6 MB77%
MP3 192 kb/sabout 5.8 MB86%
MP3 128 kb/sabout 3.8 MB91%

The formula is simple: size in KB ≈ bitrate × seconds ÷ 8. The tool shows its own estimate as soon as the file is loaded.

Recommended settings by recording type

  • Music, CD rips, mixes - 256-320 kb/s stereo, about 115-144 MB per hour.
  • Band rehearsal or demo - 192 kb/s stereo, about 86 MB per hour.
  • Podcast or interview - 96-128 kb/s, Mono, about 43-58 MB per hour.
  • Lecture or voice note - 64 kb/s, Mono, 22.05 kHz, about 29 MB per hour.

24-bit and 96 kHz studio files convert fine. If the target app expects a particular rate, use the Sample rate menu (48, 44.1, 32, 22.05 or 16 kHz); otherwise keep the original.

When to keep the WAV

MP3 is lossy, so do not use it as your master copy or for files you will keep editing, mixing or mastering - every re-encode adds artefacts. Keep the WAV for work and treat the MP3 as the copy you listen to and share. If you need a smaller file without any loss, choose FLAC in the audio converter, which typically lands at 50-60% of the WAV size.

Tags such as title and artist are not copied into the MP3. Long multi-hour recordings are processed in memory, so on an older phone they can take a while; on a laptop a few hundred megabytes usually converts in under a minute.

Private by design

Studio takes, unreleased songs and dictated notes stay on your computer: the WAV is read and encoded by your browser, and the MP3 encoder is a WebAssembly module that runs locally. Nothing is sent to a server, there is no queue and no file size cap set by us. If you drop a file that is not a WAV, the tool shows a notice and still attempts the conversion.

Frequently asked questions

Is WAV to MP3 conversion free?

+
Yes, completely free with no account, no limit on files and no watermark.

Is my WAV file uploaded?

+
No. The conversion runs locally in your browser, so the recording stays private.

Which bitrate should I use?

+
Use 192-320 kb/s for music and 96-128 kb/s for speech. A higher bitrate cannot add quality the WAV did not have, it only makes the file larger.

Will the MP3 sound worse than the WAV?

+
At 192 kb/s and above most listeners cannot hear a difference on ordinary speakers or headphones, although MP3 technically discards some information.

Can I convert very large WAV files?

+
Yes. Files of several hundred MB work on a typical computer; the practical limit is your device memory, not a server quota.

Can I get a lossless smaller file instead?

+
Yes - convert to FLAC in the audio converter. It keeps every bit of the original at roughly half the WAV size.

Updated: