AAC to MP3 converter
한국어Pick a aac file and convert it to mp3. The file does not go to a server and the work finishes on this device.
What do you want to do
Pull the sound out of a video or recording as mp3, m4a or wav. No re-encoding of video, so it is fast.
Why convert
Some devices and editors cannot open aac files. mp3 plays in more places.
What happens to the sound
Both aac and mp3 are already reduced formats. Saving as mp3 again can lower the quality a little, and the file does not always get smaller.
Questions
Is my file uploaded?
No. The aac file you pick does not leave your browser, and the conversion finishes on this device.
If an aac file will not open, is mp3 the answer?
Usually. If it still will not open, the file may be another format or damaged. The converter shows ffmpeg's error as it is.
Is it slow, or are there files that fail?
The conversion runs on a single thread on your device, so long files take time. The engine is downloaded once at the start. The size limit depends on your browser and device memory.