Convert audio
MP3, WAV, M4A, OGG, or FLAC, encoded on this device.
This runs in your browser. Nothing is uploaded. Longer clips take longer here than they would on a fast server — that is the trade-off for not sending the file.
About Convert audio
Converts audio to MP3, WAV, M4A, OGG, or FLAC in your browser with FFmpeg.wasm, so the recording never hits an online converter.
Voice memos, interview WAV dumps, and podcast holds do not need to visit a website that also shows banner ads around a progress bar. This page loads the same local FFmpeg core as the video tools and writes MP3 (lame), WAV (pcm_s16le), M4A (AAC), OGG (Vorbis), or FLAC. Video streams, if you dropped a clip by mistake, are discarded with `-vn`.
Pick the format you actually need. WAV is large. FLAC is smaller lossless. MP3 at 192 kbps is the file you can send to someone who still has a car stereo from 2009. M4A is the Apple-shaped one. OGG is for people who mean it.
The encoder is GPL software running in the tab. The first visit downloads about 30 MB of wasm; after that the service worker can keep it. Your audio is not part of that download and is not POSTed anywhere.
How to use Convert audio
- 1Drop an mp3, wav, m4a, ogg, flac, or similar file.
- 2Pick the output format.
- 3Click Convert, then Download.
What it won't do
- No album-art editor, no CUE sheets.
- First load pays for the shared ~30 MB encoder.
Common questions
Will converting to MP3 ruin a lossless master?
Yes, by definition. If the source is FLAC or WAV and you need to keep it, stay on FLAC or WAV. MP3 is a delivery format. I will not print a fake “HD MP3” badge.
Can I convert a video’s soundtrack here?
You can drop a video; `-vn` keeps the audio. The dedicated Audio from video page is the same operation with copy aimed at people who searched for that phrase.
Why is there no AAC-in-ADTS option?
Because almost everyone who says AAC wants an M4A. Raw ADTS is a specialist container. Use M4A unless you know you need the other.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation