Reverse Audio

Play anything backwards. Drop a file and it reverses instantly - preview, then download as MP3 or WAV. For reverse-cymbal swells, backmasking curiosity, or finding out what your voice memo sounds like in the mirror universe.

Drop an audio file here, or click to choose

MP3, WAV, AAC/M4A, OGG - reversed locally, never uploaded

The reverse-swell trick

Any sound with a long decay becomes a riser when reversed: a crash cymbal turns into the classic whoosh that introduces a chorus, a reverb tail becomes the ghostly swell before a vocal entrance. Reverse the sound here, then cut it to exact length in the MP3 cutter so the loudest sample lands on the downbeat. Too quiet next to the mix? The volume booster fixes that. And smooth edges on both ends come from the fade tool - a reversed sound often starts with an abrupt cut where the original ended.

Reverse Audio FAQ

How do I reverse an audio file?

Drop the file here - it reverses instantly (the samples of every channel are flipped end to front), and the preview button plays the result. Download as MP3 or WAV when it sounds right. Everything runs locally in your browser; nothing uploads.

What is reversed audio used for?

Sound design, mostly: a reversed cymbal or reversed reverb tail is the classic "swell into the downbeat" transition heard on countless records. Producers also reverse melodies to hunt for new ideas, editors use reversed swooshes for transitions, and reversing a section is the honest way to check what a supposed "backmasked message" actually contains.

How do I make a reverse cymbal or reverse reverb swell?

Take a sound with a long natural decay - a crash cymbal, or any sound with reverb printed on it - reverse it, and place it so the loud end lands exactly on the beat it introduces. The decay becomes a rising swell. Trim the result to length with the MP3 cutter for precise placement.

Does reversing lose quality?

The reversal itself is mathematically lossless - the same samples in the opposite order. Export as WAV and the only loss in the whole chain is the original file's own encoding; export as MP3 and you add one normal encoding generation, inaudible at 192-320 kbps.

Is my file uploaded?

No - decoding, reversing, preview, and export all run locally with the Web Audio API. The page works offline once loaded.