Audio Reverse – Play Audio Backwards Online (Free)
Free online audio reverser. Play any MP3, WAV, OGG, M4A, FLAC file backwards in seconds. Useful for boomerang loops, hidden messages, and creative edits. Runs locally via FFmpeg WASM.
Example Output
Audio played sample-by-sample in reverse. Speech becomes a mirror of itself, music reveals its tail-to-head shape.
phrase-reversed.mp3 ("dlrow olleh" with phonemes reversed)What is Audio Reverse?
Reverse any audio file in seconds — for boomerang loops, hidden messages, horror effects, or just to hear what your favourite song sounds like backwards. Sample-perfect reversal, no quality loss.
Why use this tool?
- Open-and-go: bookmark the page once and never look for an alternative
- Instant results — no waiting on a server or upload progress bar
- Touch-friendly UI, fine on phones for on-the-go edits
How to use
- Upload an audio file
- Pick output format (defaults to source format)
- Click Reverse Audio and download
Examples
Boomerang music loop
Original + reversed version concatenated = a seamless palindrome loop for ambient backgrounds.
Hidden-message gag
Record a phrase, reverse it, ask friends to play it backwards to "hear the secret".
Halloween / horror sting
Reversed laughter or speech makes for an unsettling sound design element.
Common use cases
- Boomerang / palindrome audio loops
- Hidden-message recordings
- Horror / Halloween sound design
- Creative music composition
- DJ / remix preparation
Troubleshooting
- Output sounds the same as input
- Symmetrical audio (sine waves, sustained tones) sounds nearly identical reversed. Reverse a recording with transient sounds (speech, drums) to clearly hear the effect.
- Long files take forever
- areverse needs to buffer the entire audio in memory. Files over an hour may be slow; consider splitting into chunks first.
Frequently Asked Questions
Yes, up to your browser memory. Multi-hour files take longer but work — the tool streams samples through FFmpeg's areverse filter.
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