Free Audio Reverser

The Audio Reverser is a free online tool that reverse any audio file online. play and download the reversed audio as wav. It runs entirely in your browser with no installation or sign-up needed.

Yes — play the reversed audio directly in your browser before downloading.

Any audio format your browser supports (MP3, WAV, OGG). Output is WAV.

Yes, completely free.

Absolutely. The Audio Reverser processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the Audio Reverser is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Audio Reverser in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The Audio Reverser works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

No — reversing is a lossless rearrangement, not a re-recording. Digital audio is stored as a list of amplitude samples taken thousands of times per second, and reversing simply plays those samples in the opposite order: the last one first and the first one last. This tool decodes your file into raw samples and writes a new buffer with the positions mirrored front to back, so the reversed clip is sample-accurate and keeps every bit of detail from the source you provided. The only quality factor is the file you start with — a low-bitrate MP3 will still sound like a low-bitrate MP3 after reversal, just backwards. The exported WAV is 16-bit PCM at your file's original sample rate. Drop a clip in above to flip it without any quality loss from the reversal itself.

When you export, the reversed audio is mixed down to a single mono channel — the left and right channels are averaged together into one. This keeps the WAV file small and predictable, which is fine for sound effects, voice clips, risers, and most layered uses. The trade-off is that any true stereo image in the original, such as instruments panned hard left or right, collapses to the center in the download. The in-browser preview still plays back the full reversed buffer, so you can hear the effect before committing. If your final mix depends on preserving stereo width, reverse the clip here to audition it, then recreate the reversal on the stereo source in your audio editor. For everything else, the mono WAV works perfectly — load a file above to try it.

Backmasking is the technique of recording a phrase, reversing it, and layering that reversed audio back into a track so it plays backwards within forward-running music. It produces the eerie, garbled reversed-speech sound long used in horror films, sci-fi, and experimental records, sometimes to hide a message that only becomes clear when the song itself is reversed. To make it here, record or import a short voice clip, drop it onto the upload area, and the tool flips it end-to-end instantly. Preview the reversed version to confirm it sounds the way you want, then download the WAV and drop it onto a track in your editor. You can also reverse audio that supposedly contains a hidden message to hear what it actually says. Add your clip above to start experimenting with backmasking.

You can drop in essentially any format your browser is able to decode, which in practice covers MP3, WAV, OGG, and AAC files. The tool hands your file to the browser's Web Audio API, so support follows whatever your browser already plays natively rather than a fixed list. Once decoded, the audio is reversed sample by sample for each channel and shown as a waveform alongside the original. Regardless of what you put in, the output you download is always a WAV file encoded as 16-bit PCM at the source file's sample rate, named after your original with a "_reversed" suffix added. WAV is uncompressed and universally accepted by audio and video editors, so it imports cleanly anywhere. Drag your MP3, WAV, OGG, or AAC clip onto the tool above to get a reversed WAV back.

After you load a file, the tool draws two visual graphs: the original waveform and the reversed waveform. Seeing them next to each other lets you confirm at a glance that the audio actually flipped — the shape of the reversed graph mirrors the original front to back, so a sound that fades in at the end of the source now spikes at the start. The clip's duration is also shown next to the filename so you know exactly how long the audio is. The waveforms are purely visual aids and don't change the sound; the real check is the preview, where play buttons let you hear both the original and the reversed versions before downloading. Comparing the graphs and listening first saves you from exporting a take that isn't quite right. Load a clip above to see both waveforms appear instantly.