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Home » Audio Tools » Audio Converter

Audio Converter

Convert audio between MP3, WAV, M4A, OGG and FLAC in your browser, with bitrate options.

🔒 Your audio is processed locally in your browser. Your file is never uploaded.

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How to use the Audio Converter

  1. Choose an audio file (or a video to take its sound).
  2. Pick the output format and quality.
  3. Click "Convert" and download.

Common use cases

  • Turn big WAV recordings into small MP3s
  • Convert iPhone voice memos (M4A) to MP3
  • Make a WAV for audio editors or DJ software

Example

A 50 MB, 5-minute WAV becomes a 7 MB MP3 at 192 kbps.

What the Audio Converter does

It re-saves sound in the format you need. MP3 plays on everything. M4A/AAC is Apple's default and a little more efficient. OGG is open and popular in games. WAV is uncompressed for editing, and FLAC is lossless but about half the size of WAV. Tags such as title and artist are kept where the target format supports them.

Converting between lossy formats (for example M4A to MP3) can't add quality back, so choose 192 kbps or more for music. For speech and voice memos, 96–128 kbps is plenty.

Frequently Asked Questions (FAQ)

Q: Is my file uploaded to a server?
A: No. The tool runs FFmpeg compiled to WebAssembly inside your browser tab. Your file is read directly from your device and the result is created locally. Only the video engine itself (open-source ffmpeg.wasm, about 10 MB compressed) is downloaded the first time, from a public CDN; after that it is cached.
Q: How big can the file be?
A: Up to about 500 MB works well on a computer and about 150 MB on a phone. Larger files may still work but can be slow or run out of browser memory. Trimming the clip or lowering the resolution first helps.
Q: Why is it slower than a desktop app?
A: The browser version of FFmpeg runs on a single CPU core and without hardware acceleration. A 1-minute 1080p re-encode typically takes 1–3 minutes. When possible the tools copy the streams without re-encoding, which takes only seconds.
Q: Can I convert iPhone voice memos?
A: Yes. Voice memos are M4A files. Choose MP3 at 96–128 kbps for a small file that plays everywhere.