Convert Audio to MP3, WAV, FLAC or OGG
Drop audio files, pick a target format and a bitrate, and download each result. The page brings its own MP3 and FLAC encoders (about 1 MB, fetched from this site the first time you drop a file) and uses your browser's built-in decoders for the rest. Nothing is uploaded and there is no size limit beyond what your device can hold.
Drop audio files here or browse
MP3, WAV, FLAC, OGG, M4A, AAC, OPUS, or a video · nothing is uploaded
M4A is greyed out because this browser has no AAC encoder. Chrome, Edge and Safari on a computer or phone usually do.
Only applies to MP3, OGG and M4A. WAV and FLAC keep every sample.
Which format to pick
MP3 is the one that opens on everything made since the late nineties, which is the reason to use it. At 192 kbps almost nobody can tell it from the original; 128 is fine for most music and plenty for speech; 320 is the ceiling and mostly buys file size. WAV is the same audio with no compression at all, about 10 MB per minute of stereo: what editing software and some upload forms ask for, and a poor choice for sending or storing. FLAC keeps every sample like WAV at roughly half the size, so it is the right archive format and the right way to hand audio to someone who will edit it. OGG here means Opus, the codec behind most voice calls and streaming, which sounds better than MP3 at the same bitrate; its weakness is that older players and some phones will not open it. M4A is AAC in an MP4 container, what Apple devices and most phones record in, and is only offered when your browser has an AAC encoder, which most desktop and phone browsers do.
Converting between lossy formats loses something
MP3, OGG and M4A each throw away the parts of the sound they decide you will not hear. Converting one lossy file to another decodes it and encodes it again, and the second encoder makes its own cuts on top of the first ones. At 192 kbps or more the loss is small; at 96 it is audible on music. If you have the original WAV or FLAC, convert from that instead of from an MP3. And converting an MP3 to FLAC or WAV gains nothing: you get a large, exact copy of an already-reduced file.
What happens to a video file
Dropping an MP4, WebM or MOV pulls the audio track out and converts only that; the picture is discarded. It is the quickest way to get the sound from a recording or a screen capture. The one case that fails is a video whose audio codec your browser cannot decode, which the tool says plainly for that file.
What is kept and what is not
The audio comes through at its original sample rate and channel count. Tags do not: title, artist, album art and the rest are not copied into the new file, so if those matter, add them afterwards in your player. Converting is roughly ten to fifty times faster than real time, so an hour-long recording takes a minute or two, and files are handled one after another to keep memory in check. The whole file does sit in memory while it converts, which on a phone puts a practical ceiling at a few hundred megabytes.
About the decoders
This page relies on the audio decoders your browser already ships for playing media, and those vary. Every current browser decodes MP3, WAV, FLAC, Opus and Vorbis. AAC (M4A, and the audio in most MP4 videos) decodes in Chrome, Edge, Safari and Firefox on normal installs, but not in some Linux builds and not in Chromium without proprietary codecs. When a file cannot be decoded, the tool says so for that file and moves on.
Frequently asked questions
Are my audio files uploaded to convert them?
No. Decoding and encoding happen inside your browser and the converted file is written on your device. The only download is the converter itself, about 1 MB fetched from this site the first time you use the tool. You can check the Network tab of the developer tools while converting.
Which bitrate should I use for MP3?
192 kbps is the safe default: the difference from the original is very hard to hear and a four-minute song is about 5.5 MB. Use 128 for speech or when size matters more than fidelity, and 320 only if the file will be edited or compressed again later.
Why can I not pick M4A on my browser?
M4A needs an AAC encoder and the tool uses the one built into the browser rather than shipping its own. Chrome, Edge and Safari on desktop and phones have one; Firefox and some Linux builds do not, and then the option is greyed out. MP3 at the same bitrate is the usual substitute.
Does the converted file keep the song title and album art?
No. The conversion writes the audio and nothing else, so ID3 tags, Vorbis comments and embedded artwork are not copied across. Most music players and tag editors can add them back in a few seconds.
Can I extract the audio from a video?
Yes. Drop an MP4, WebM, MOV or MKV and only the audio track is converted; the video is discarded. If the video uses an audio codec your browser cannot decode, the tool reports it for that file instead of producing a silent result.
Last updated October 21, 2026