To reverse audio in Audacity: import the file, select the audio with Ctrl+A (Cmd+A on Mac) or by dragging across a region, then open the Effect menu and click Reverse. The waveform flips end to end instantly. Export with File → Export Audio — WAV keeps it lossless. Reverse is built in, so there is nothing to install, and the whole job takes under a minute.
Where is the Reverse effect in Audacity?
Reverse ships with Audacity — it is not a plugin and never needs downloading. In Audacity 3.1 and later, open the Effect menu and look under the Special heading near the bottom; Reverse is there. On versions older than 3.1 the same command lived one level deeper, at Effect → Special → Reverse. If you are unsure which version you have, check Audacity → About Audacity (or Help → About on Windows).
The command stays greyed out until two conditions are met: audio must be selected, and playback must be stopped. Click into a track and press Ctrl+A (Cmd+A on Mac) to select everything, or drag across part of the waveform to select a region. If Reverse still looks disabled, press the Stop button first — the effect cannot run while a track is playing or recording.
Reverse works on whatever is selected and nothing else. Select all and the entire track flips; select two seconds and only those two seconds flip. That selection-based behaviour is the whole reason to reach for Audacity instead of a one-tap reverser, and the next sections walk through both cases.
How do you reverse a whole track in Audacity?
Five steps, start to finish:
- Install and open Audacity. Download it free from audacityteam.org and launch the app. It runs on Windows, macOS, and Linux.
- Import your audio. File → Import → Audio, or drag the file straight into the window. It appears as a waveform on a new track.
- Select everything. Press Ctrl+A on Windows/Linux, Cmd+A on Mac. The whole waveform highlights.
- Apply Effect → Reverse. Open the Effect menu and click Reverse. The waveform flips end to end instantly — the last sample becomes the first.
- Export. File → Export Audio, then choose WAV for a lossless copy or MP3 if file size matters more than fidelity.
Audacity opens MP3, WAV, M4A, FLAC, AIFF, and OGG, so almost anything you own imports cleanly. The one thing no editor can open is a DRM-protected stream from Spotify or Apple Music — those are not files you can import. Reverse songs and clips you actually own: purchases, DRM-free downloads, or your own recordings. For a wider look at flipping full tracks across phone, browser, and desktop, see how to reverse a song.
How do you reverse only one part of a clip?
This is where Audacity beats every one-tap tool. Instead of selecting all, drag across just the region you want on the waveform — one word, a drum fill, a snare hit, a reverb tail — then choose Effect → Reverse. Only the highlighted section flips; everything before and after it keeps playing forward. Nothing else in the project changes.
Precision helps here. Zoom in with Ctrl+1 (Cmd+1) so you can see individual transients, and turn on Snap-To or use the selection toolbar to type exact start and end times if you need the region to line up with a beat. To hear the edit in context before committing, select a little past the region and press play — Audacity previews the current state, and you can Ctrl+Z and re-select if the boundaries are off.
Region reversing is the technique behind a lot of production moves: a reversed vocal fragment dropped mid-phrase, a flipped drum fill leading into a chorus, or a reverse cymbal used as a transition. That last one has its own recipe in how to make a reverse cymbal swell. If you only ever need to flip whole files, though, a lighter tool will be faster — which the comparison below lays out.
Audacity vs the browser tool vs the phone app
Audacity is the right call for section reversing and multitrack editing. For a quick whole-file flip, a browser tool or phone app is faster because there is no install, import, or export dance. Here is how the three compare:
| Method | Runs on | Cost | Reverses a section? | Best for |
|---|---|---|---|---|
| Audacity | Windows, macOS, Linux | Free | Yes — drag-select any region | Section reversing, fades, multitrack edits |
| Browser tool | Any browser, no install | Free | No — whole file only | One-off flips of a file already on disk |
| Reverse Audio PRO app | iPhone, Android | Free; Pro $4.99 once | No — whole clip only | Record-and-reverse in one place, plus speed and pitch |
If the audio is already a file on your computer and you just need it flipped, the free audio reverser is the quickest route: drop the file in, press reverse, download a WAV. It runs entirely in your browser on the Web Audio API — nothing uploads, so private or unreleased audio never leaves your machine. If the audio starts on your phone, or you want to record something and flip it in the same session, the Reverse Audio PRO app records, reverses, and plays back on one screen, then adds speed (0.25×–3.0×), pitch (±12 semitones), ten effects, and MP3/M4A export. Step-by-step mobile guides live at reverse audio on iPhone and on Android.
What export settings should you use in Audacity?
Export as WAV for anything that will be edited further; use MP3 only for sketches and quick sharing. In File → Export Audio, WAV at 44.1 kHz, 16-bit is the standard delivery format and survives repeated edits — trimming, layering, reversing back — with zero generation loss. Because reversal itself discards nothing, a reversed WAV is bit-for-bit as good as the source.
MP3 re-encodes the audio and throws away detail every time it saves, and the detail it discards first — high-frequency shimmer — is exactly what makes reversed cymbals, reverb tails, and vocal swells sound interesting. Flip a cymbal, export it as a low-bitrate MP3, and the swell can sound noticeably duller than the WAV it came from. So sketch in MP3 if you must, but commit in WAV.
One habit worth keeping: if you plan to edit the reversed audio later, save the Audacity project (.aup3) as well as exporting. The project keeps your tracks, selections, and undo history intact, so you can reopen and adjust the reversed region instead of starting over. Curious why the flipped audio sounds so strange in the first place? Why reversed audio sounds weird explains the envelope inversion behind it.