Convert audio
Convert audio to MP3, M4A, WAV, OGG, WebM or FLAC, with bitrate, sample rate and channel options.
Drop an audio file
or drop it here, or paste. Up to 500 MB per file.
Runs in your browser. Your files are not uploaded.
Formats: the format list shows only what this browser can encode. MP3 and FLAC use an encoder that downloads the first time you choose them. M4A (AAC) is not available in every Firefox version.
Memory: audio is decoded in full, about 23 MB per minute of 48 kHz stereo, so long recordings can be slow on phones. Files that would need more than about 1 GB once decoded (about 45 minutes of 48 kHz stereo, or 90 of mono) are refused before decoding.
How to use Convert audio
Choose an audio file or drop it on the page.
Pick the output format from the list.
For MP3, M4A, OGG and WebM, choose a bitrate. Sample rate and channels are optional.
Select Apply, then download the result.
Questions
No. Everything runs in your browser and the file never leaves your device.
MP3, M4A (AAC), OGG (Opus), WebM (Opus), WAV and FLAC, as far as your browser can encode them. The format list only shows the ones it can write.
Converting to MP3, M4A, OGG or WebM re-encodes the audio, so a higher bitrate keeps more quality. WAV and FLAC are lossless, so they add no loss to what was decoded.
Files up to 500 MB are accepted. Very long recordings can be refused because the decoded audio would need more than 1 GB of memory.
Related tools
- Compress audioMake audio files smaller by choosing a lower bitrate or a target file size.
- Extract audio from video: MP4 to MP3Save the soundtrack of an MP4, MOV, WebM or MKV video as an audio file, without re-encoding when possible.
- Audio cutter: cut MP3 and make ringtonesSelect part of a recording on the waveform and keep it, or cut it out.
- Audio joinerJoin several audio files into one, in the order you choose.