Reverse audio: play any sound backwards
Flip a song, a voice, or a sound effect to play from end to start.
10M+ files processed since 2021
More options
Free for the first 10 minutes, 10 times a day. No sign-up.
Hear the difference
Play Original, then Reversed.
Reversed plays the recording from the end to the start.
Made with Reverse audio · Elizabeth Klett for LibriVox (public domain)
How to reverse audio
- 1
Add a recording, a song, or a video.
- 2
Press Reverse to turn it around.
- 3
Play audio backwards right here, then download it.
What reversing does to a sound
Audo's audio reverser plays recordings (WAV, MP3, M4A, AAC, FLAC, OGG, Opus, WebM, AIFF) and the sound of videos (MP4, MOV, MKV, WebM, AVI) backwards, up to 10 GB without an account, and the first 10 minutes of each file is free, 10 times a day, with no sign-up. The whole file turns around, so the last moment comes first, at the same speed and pitch.
Sounds have a shape in time: a piano note hits hard and fades, a cymbal crashes and rings on. Reversed, each one swells up out of nothing and stops dead, which is why a reversed song sounds dreamy and strange even with the same notes. Speech turns into a language nobody speaks, its vowels intact and its consonants inside out.
Sound designers reverse sounds for risers, whooshes, and ghostly effects, and producers reverse a cymbal to lead into a drop. To change how fast it plays as well, run the result through Change speed.
Questions
Is it free?
Yes. Audo is free for the first 10 minutes of each file, 10 times a day, with no sign-up. Whole files are $0.01 a minute ($0.60 an hour), with no subscription — see pricing.
Can I reverse a video?
You get its sound reversed, as an audio file; the picture isn't turned around. With Save as on Same as the original, a video's reversed sound comes back as M4A, or pick MP3 or WAV under More options.
How do I make a reverse reverb effect?
Reverse the sound, add reverb to it in your editor, then reverse it again here. The echo now swells up into the note instead of trailing after it: the rising whoosh heard before the vocals in many songs.
How do I find a hidden message in a song?
Cut out the part you're curious about with Cut audio, so it's short, then reverse it and listen. Records have hidden reversed sounds since the 1960s, though most hidden messages turn out to be our ears finding words in noise.
Does reversing lower the quality?
No. Every moment of sound is kept and only the order changes, so a WAV or FLAC result is the original exactly, backwards. An MP3 is compressed again when it's saved, as any MP3 is.
Can I reverse just part of a file?
Cut the part out in the Audio editor first, then reverse it. To put it back in its place, Merge audio joins the pieces in order.
How does the reverse singing challenge work?
Reverse a line of a song, learn to sing what you hear, record yourself, then reverse your recording to see how close it comes to the original. The Voice recorder records the take in your browser.
More tools
- EditorEdit audio and video right here.
- Cut audioTrim start, middle or end.
- Merge audioMerge files into one.
- Remove silenceCut out long pauses.
- Mix audioLayer voices and music.
- Mute videoSame video, no sound.
- Audio enhancerMake any recording sound studio‑quality.
- Remove noiseClears the background, keeps your voice.
- Remove echoMake voices sound close.
- Vocal removerSeparate vocals, music, and stems.
For AI assistants and developers
Ask ChatGPT, Claude, or a coding agent to do this for you, or call it from your own code. When an agent's free result is cut short, it gives you a link to finish the whole file, no sign-up.
Show the free API call
curl -F file=@cymbal.wav https://audo.ai/api/try/reverse -D response.headers -o response.body