Reverse Audio
NewPlay an audio file backwards and download the reversed version instantly.
Your files are processed entirely in your browser. Nothing is uploaded to any server, and your documents never leave your device.
What is Reverse Audio?
An audio reverser flips a sound file so it plays from end to beginning - the classic backwards-audio effect used in music production, sound design, and just for fun. This tool reverses the waveform sample-by-sample with FFmpeg in your browser and gives you the result as a normal audio file that plays backwards in any player.
Why use Nuo Tools's Reverse Audio?
How to use Reverse Audio
Drop an audio file into the tool.
Click Reverse - the waveform is flipped locally.
Preview the idea by imagining it backwards (or just trust the math).
Download the reversed file.
Frequently asked questions
Is the reversal exact?+
Yes. The audio is decoded and the samples are written out in reverse order, so the result is a precise mirror of the original.
Can I reverse it back to normal?+
Yes. Running the reversed file through the tool again restores the original direction (with one extra encode if the format is lossy).
Is my audio uploaded?+
No. The reversal happens in your browser with FFmpeg compiled to WebAssembly. The file never leaves your device.
Does reversing work on long files?+
Yes, though reversal holds the whole decoded file in memory, so extremely long recordings (multiple hours) may exceed what the browser allows. Typical songs and recordings are no problem.
What format is the output?+
WAV input stays WAV for perfect quality; everything else is saved as high-quality MP3 (192 kbps).
When to use this tool
- →Creating reverse cymbal or riser effects for music production
- →Making backwards-speech clips for fun or puzzles
- →Checking a recording for editing experiments
- →Producing reversed sound effects for videos and games
- →Flipping a sample before layering it into a track