Reverse audio
Your files are processed on your device. We never upload them.
Audio is read and written with Mediabunny. MP3 files are made with LAME and FLAC files with libFLAC; browsers without their own AAC encoder use FFmpeg's. Apple Lossless files follow Apple's ALAC code.
How to reverse audio
- 01A ▸Choose an audio file, or drop it on the page.
- 02A ▸Pick the format to save, or keep the original's.
- 03A ▸Select Reverse audio, listen to the result, and download it.
Questions
What is reversed audio used for?
Sound effects (reversed cymbals and reverb swells), music production, games and puzzles, and checking songs for "backmasked" messages.
Are my files uploaded?
No. Your files are processed on your device. We never upload them.
Does it lose quality?
Saving as WAV or FLAC keeps every sample, at the original's bit depth. Saving as MP3 or M4A compresses the reversed sound once, which at High (192 kbps) is very hard to hear.
Can I reverse only part of a file?
Trim the part you want first with Trim audio, then reverse it here.
Does reversing twice give back the original?
Yes, sample for sample, when you save as WAV each time.