How to use the Audio Converter tool
- Choose the outputSelect MP3 (320, 192 or 128 kbps) or WAV, and optionally mono or a different sample rate.
- Add your filesDrop audio files onto the box. Conversion starts automatically.
- Wait a momentEach file is decoded and encoded in your browser. Progress is shown for every file.
- DownloadDownload files one by one, or click “Download all” for a ZIP.
Features
- Many input formatsAnything your browser can play: WAV, MP3, M4A/AAC, OGG, Opus, FLAC and WebM audio.
- Quality controlMP3 at 128, 192 or 320 kbps, or lossless 16-bit WAV.
- Mono and sample rateHalve the size of voice recordings with mono, or match 44.1 kHz and 48 kHz projects.
- Volume normalizeMake quiet recordings louder without clipping.
- Private and fastFiles are converted on your device, with no upload and no waiting in a queue.
Common audio formats compared
| Format | Type | Size per minute | Best for |
|---|---|---|---|
| WAV | Uncompressed | ~10 MB | Editing, archiving, professional work |
| FLAC | Lossless compressed | ~5–6 MB | Music archives |
| MP3 320 kbps | Lossy | ~2.4 MB | High-quality music that plays everywhere |
| MP3 192 kbps | Lossy | ~1.4 MB | Everyday music listening |
| MP3 128 kbps | Lossy | ~0.9 MB | Podcasts, speech, ringtones |
| M4A / AAC | Lossy | ~1 MB | Apple devices, streaming |
| OGG / Opus | Lossy | ~0.5–1 MB | Web, games, voice messages |
Why convert to MP3?
MP3 is the most compatible audio format in the world. It plays on every phone, computer, car stereo, smart speaker and website. Converting WAV or FLAC to MP3 shrinks files by 75–90% for sharing, while converting M4A, OGG or Opus to MP3 helps when a device or app doesn’t support those formats, such as older car stereos or some voice-message exports.
Tips for the best quality
- Start from the best source. Converting a 128 kbps MP3 to 320 kbps doesn’t add quality; it just makes the file bigger.
- Use mono for speech. Interviews, lectures and voice notes rarely need stereo, and mono halves the size.
- Choose WAV for editing. Each lossy re-encode loses a little detail, so edit in WAV and export MP3 at the end.
- Normalize quiet recordings so they play at a comfortable volume.
Limitations
This converter outputs MP3 and WAV, the two most widely supported formats. Input support depends on your browser: Chrome, Edge and Firefox open nearly everything, while Safari can’t open some OGG files. Need the sound from a video? Use Video to MP3. To trim or join files, try the Audio Cutter and Audio Joiner.
Frequently asked questions
How do I convert WAV to MP3?+
Choose an MP3 quality, drop your WAV files and they are converted automatically. Download them one by one or as a ZIP.
Which MP3 quality should I choose?+
192 kbps is a great balance for music. Use 320 kbps for the best quality, or 128 kbps for speech and smaller files.
Can I convert M4A or OGG to MP3?+
Yes. Any format your browser can play, including M4A, AAC, OGG, Opus and FLAC, can be converted to MP3 or WAV.
Is there a file size limit?+
There is no fixed limit, but very long files need more memory. Files up to a few hundred MB work well on most computers.
Are my files uploaded?+
No. Conversion happens in your browser and your audio never leaves your device.