Reverse Audio
Reverse an audio file so it plays backwards, preview the result and download it as a WAV — entirely in your browser.
Drag & drop an audio file here, or click to browse
MP3, WAV, M4A, OGG, FLAC or WebM. No uploads — your file stays on your device.
The combined modes double the length and make a palindrome.
Result
How it works
Drop in a track and this tool decodes it with the Web Audio API inside your browser tab, then flips every sample end-to-end so the audio plays backwards. Nothing is uploaded — voice memos, unreleased mixes and lecture recordings never leave your device, and the reversed version is ready to play back within a moment of dropping the file in.
Reversing is completely lossless at the sample level: the same audio data comes back, just in the opposite order, so reversing the result again gives you the original waveform. Use the combined modes to glue the forward and backward versions together for reverse-reverb swells and palindrome loops, and keep the 10 ms fade on so the file does not start or end with a click. The output is an uncompressed 16-bit WAV that every editor, DAW and phone can open.
Frequently asked questions
Is my audio uploaded to a server?
No. The file is decoded and reversed with the Web Audio API inside your browser tab, so it never leaves your device — there is no server, no account and no shareable link. That makes it safe for unreleased mixes, interviews and voice memos, and it keeps working if you go offline after the page has loaded.
Does reversing audio lose any quality?
Reversing is lossless at the sample level: exactly the same audio data comes back, just in the opposite order, so reversing the result again returns the original waveform. The only quality step is the source format — a lossy MP3 or M4A is decoded first, and the output is saved as an uncompressed 16-bit WAV so nothing is re-compressed.
What are the combined forward and reversed modes for?
They glue the original and the reversed copy together into a palindrome that is twice as long. "Original, then reversed" is the classic tape-echo tail, while "Reversed, then original" builds a reverse-cymbal or reverse-reverb swell that lands on the downbeat. Keep the 10 ms fade in and out switched on so the file does not begin or end with a click.