How to convert audio
Choose the files
Choose one or several audio files; you can add videos to convert their sound.
Pick the format
MP3 works everywhere. Pick a quality if needed.
Convert and download
Press “Convert”, then download each file or all of them as a ZIP.
Which format should I choose?
| Format | Best for | Watch out |
|---|---|---|
| MP3 | Every device, website and car stereo. | Slightly lossy; 192 kbps is good quality. |
| M4A (AAC) | iPhone and Apple devices; better than MP3 at the same size. | Some old devices can’t read it. |
| WAV | Editing and production software. | Uncompressed, so very large (about 10 MB a minute). |
| OGG and OPUS | Websites, games and messaging apps. | Older iPhones don’t play them in every app. |
| FLAC | Keeping music lossless at a smaller size than WAV. | Converting MP3 to FLAC doesn’t bring back lost quality. |
Frequently asked questions
How do I convert a WhatsApp voice note to MP3?
WhatsApp voice notes are OPUS or OGG. Choose the file, set the format to MP3 and press “Convert”.
How do I convert M4A to MP3?
Choose the M4A file (iPhone recordings, for example), pick MP3 at 192 kbps, press “Convert” and download it.
Does converting MP3 to WAV or FLAC improve quality?
No. Quality lost in MP3 compression doesn’t come back; the file just gets bigger. Convert to WAV only when a program or site asks for it.
How many files can I convert at once?
Up to 50. They are converted one after another, and you download them one by one or together as a ZIP.
Is my file uploaded?
No. The tool runs inside your browser with the open-source FFmpeg engine; the file is read from your device and the result is saved back to it, never reaching our servers or anyone else’s.
Does it work on iPhone and Android?
Yes, in Safari (16.4 or newer), Chrome, Firefox and Edge, on phones and computers. Phones have less memory, so very long files may stop.