Audio → MP3 · M4A · WAV
Audio converter
Drop an audio file here to convert it to MP3, M4A or WAV. The conversion runs in this tab, so the file never leaves your device.
WAV, MP3, M4A, AAC, OGG, Opus and FLAC are accepted; which of them open depends on your browser. MP3 at 192 kbps suits most recordings.
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At a glance
- Price
- No charge
- Account
- None needed
- Upload
- None — the file is read and converted in your browser tab, nothing is sent to a server
- Input
- WAV, MP3, M4A, AAC, OGG, Opus, FLAC (as far as your browser can decode them)
- Output
- MP3 (128, 192 or 320 kbps), M4A or WAV
- File size
- 1 GB per file, 5 files per batch
- Works on
- Recent Chrome, Edge, Firefox or Safari (Safari 26+ for audio)
How to convert an audio file
Add the audio
Drop an audio file on the box above, or up to five at once — a batch runs one file after another.
Choose the format
MP3 plays almost everywhere, M4A (AAC) is smaller than WAV and common on Apple devices, and WAV is uncompressed, which suits editing.
Download the result
The converted file appears with its size and plays right there. Download it, or add the next file without reloading the page.
Picking the right output format
MP3 and M4A are lossy: they drop detail the ear rarely misses so that the file stays small. WAV keeps every sample, so it is large and suits editing more than sharing. Converting one lossy file into another lossy format encodes it a second time, which costs a little quality, so keep the original when it matters.
Reading the file is done by your browser's own audio decoders. MP3 and WAV open in current browsers; AAC (M4A), OGG Vorbis, Opus and FLAC depend on the browser and the system. A file the browser cannot decode gives an error instead of a broken result. When an M4A holds AAC and the output is also M4A, the audio is copied without re-encoding.
Audio converter questions
Is my file uploaded anywhere?
No. The file is read and converted by your browser in this tab, and nothing is stored. The MP3 encoder is a small script that loads from this site the first time you choose MP3; the audio itself is never sent.
Which audio files can I convert?
WAV, MP3, M4A, AAC, OGG, Opus and FLAC files are accepted. Whether a given file opens depends on the decoders in your browser, so a rarer codec may work in one browser and not in another.
Why does my OGG or FLAC file show an error?
Decoding is done by the browser. If it has no decoder for the codec inside the file, the tool says so instead of writing a broken file. Try the latest Chrome, Edge, Firefox or Safari, or another file.
Which output format should I choose?
MP3 for the widest playback, M4A for a small file on Apple devices and many phones, WAV when you will edit the audio further. For MP3, 192 kbps is the default; choose 320 kbps for music or 128 kbps for a small file.
Does converting reduce the quality?
Between two lossy formats, slightly: the audio is decoded and encoded again. Converting into WAV does not add loss, but the file gets much larger. An M4A with AAC audio converted to M4A is copied untouched.
How large can the file be?
Up to 1 GB per file and up to 5 files in one batch. Past that, a phone tab usually runs out of memory before the converter does.