Free Online Audio Converter
Convert between common audio formats without installing desktop software. The first run may download a local engine, then files process on your device. Keep originals until you confirm the result.
Input
Process
Output
Log in to save this operation.
Tasks
Change audio format
Pick format and bitrate, then convert.
How to use
- Drop a video or audio file.
- Choose format and bitrate.
- Convert and download.
FAQ
Which format should I pick for music vs voice?
For music, keep a lossless option like FLAC when you care about fidelity, or MP3/M4A for everyday listening and sharing. For voice notes and podcasts, Opus or OGG usually sound clear at smaller sizes; WAV is fine when you need an uncompressed editable master.
Does converting to MP3 reduce quality?
Yes. MP3 is a lossy format, so each encode can discard detail that cannot be restored later. If the source is already MP3, converting again can compound that loss—prefer converting from a higher-quality or lossless original when you can.
What audio formats can I convert between?
You can convert among common formats such as MP3, M4A, WAV, OGG, Opus, and FLAC. Pick an output format and bitrate, then convert and download the result in this tab.
Why does the first conversion take longer?
The first run downloads a local ffmpeg.wasm engine into your browser, then caches it. Later conversions on the same device usually start faster because that engine does not need to download again.
Is there a fixed maximum file size?
There is no fixed server upload limit. How large a file you can convert depends on your device memory and browser, so very large files may fail on low-memory phones or older machines.
Is my data private?
Yes. Audio conversion runs with a local engine in your browser, so your tracks are not uploaded to finish the job.