Make audio files work where you need them. Convert one file or a batch to MP3, WAV, M4A or FLAC, or keep just the sound from a video, on your device.
Download the public 40-second practice WAV or 12-second practice MP4. Add one, choose MP3 under Save as and 128 kbps under Audio quality, then click Convert 1 file to MP3.
The WAV should produce about 40 seconds of tones, roughly 0.64 MB plus headers; the MP4 should produce about 12 seconds of its tone with no picture. Listen and check the actual size. For M4A or FLAC practice, convert the WAV to that format first, then use the downloaded result as the new source.
Changing a lossy format encodes the sound again. WAV output is 16-bit PCM; keep the source when its original bit depth, metadata or exact bytes matter.
MP3, WAV, M4A/AAC, FLAC, Ogg, Opus and WebM audio, plus MP4, M4V, MOV, MKV and WebM videos, when their audio codec is supported by your browser. A file with an unsupported codec shows an error on its row.
Yes, up to 20 files, 500 MB each and 1 GB total. Finished files can be downloaded separately or in one ZIP.
Yes, when the source file has them and the chosen format can store them. Many recordings have no such tags.
No. Conversion runs in your browser. Encoder code is downloaded from this site only when needed; the files remain on your device.
Guides, common conversions and useful next steps.
Arrange clips, mix tracks and add fades on a local timeline.
Use the action beside a finished result to send it directly, or open another tool: