Convert Audio
Convert music and voice recordings to MP3, WAV, M4A, OGG, FLAC or OPUS.
Runs 100% in your browser. Your files are not uploaded to any server.
How to use Convert Audio
- Drop an audio file into the box (MP3, WAV, M4A, FLAC, OGG, AMR and more).
- Choose the format you need and, for MP3/M4A/OGG/OPUS, the quality.
- Optionally switch to mono for voice recordings to halve the size.
- Click “Convert audio” and download the file.
Frequently asked questions
Which format is best?
MP3 plays everywhere. M4A/AAC sounds slightly better at the same size. FLAC and WAV are lossless — perfect quality, but much larger files. OPUS is excellent for voice at small sizes.
Can I convert iPhone voice memos?
Yes. Voice memos are M4A files — drop one in and choose MP3 to share it anywhere.
Is Convert Audio free?
Yes. Convert Audio is free to use with no sign-up and no watermark.
Are my files uploaded to your server?
No. All processing happens locally in your browser using JavaScript and WebAssembly. Your files never leave your device, which also makes it fast and private.
Does it work on my phone?
Yes. It works in any modern browser on Windows, Mac, Linux, Android and iPhone. Very large files may be slow on older phones.