Free tools for your next audio edit
Play a sound effect, voice recording, or musical phrase backwards. Choose a short MP3 or WAV, reverse the complete recording, then preview and download WAV or MP3. Your audio stays in this browser, with no account needed.
No file selected. Audio stays in this browser.
Reverses the complete decoded recording within each channel. No trimming, fades, speed change, normalization, or source separation. Download before leaving and keep your original.
Last sound first
Start from an original recording you can use. This reverses the complete selected file, so prepare a shorter excerpt first if you need only one sound.
Use a mono or stereo file up to 50 MiB and five minutes. Preview the original if needed. The browser reads it locally; it is not uploaded for AI processing.
WAV is the default for editing. MP3 offers 128, 192, or 320 kbps for a compressed delivery. Select Reverse & preview to decode the file and reverse time within each channel.
The preview plays the actual export, not a simulated backwards player. Download that same file before leaving the page. Check its start, ending, and timing in your intended edit.
Reverse time, keep the channel positions
The last decoded sample frame becomes the first, the next-to-last becomes the second, and so on. In stereo, the left channel stays on the left and the right stays on the right. It reverses the timeline within both channels together rather than swapping speakers or reversing the order of encoded file bytes.
For a recording containing a door opening, a footstep, and a bell, the reversed version starts with the bell played backwards, followed by the reversed footstep and door. The sounds themselves reverse, not just the order of three unchanged clips. Audacity’s Reverse reference describes the same end-first operation for selected audio.
Playback speed is unchanged: one second of decoded frames still lasts one second in the WAV. This is different from slowing audio or changing pitch with a playback-rate setting. The attack and decay now run in the opposite direction, so familiar sounds can still feel dramatically different.
Make the effect useful in an edit
Keep a decay that rises toward an ending when reversed. Use the free audio trimmer to prepare that excerpt first, then reverse the downloaded copy here. Preserve enough tail to hear the build rather than cutting it prematurely.
Reverse an existing spoken recording and listen to the resulting syllable shapes. This does not translate speech, transcribe it, recover missing words, or identify hidden messages. It also does not record your microphone; choose a saved MP3 or WAV.
Reverse a phrase to test a transition or texture. If it contains drums, vocals, and instruments, every part reverses together. To work on one sound alone, prepare a suitable source first; this operation does not separate the mix.
Choose the file for its next use
The browser decodes at 48 kHz. WAV writes 16-bit PCM with the reversed decoded frame count and original mono/stereo channel count. MP3 adds a new lossy encode and may add delay or padding. Original tags, artwork, and source bit depth are not retained. Browser decoding can also resample the source; neither export is a bit-for-bit reversal of the original file.
The result shows actual exported bytes. A compressed MP3 input can expand beyond the 50 MiB WAV limit; choose MP3 or a shorter excerpt if that happens. The audio file size calculator can help plan the duration and format before an export.
No fades, trimming, gain changes, or normalization are applied. Samples outside integer PCM range are clipped during export. Check the boundaries for clicks: if needed, use the fade tool on the reversed working copy, or adjust its boundaries in your editor. Read the edit-click guide to distinguish an edge click from damage already in the recording.
Each preparation starts from the selected original. Changing the download format does not reverse a previous result again. Reversing decoded samples twice restores their order, but two rounds of resampling, quantization, or MP3 encoding do not restore the original file bytes or lost detail. Keep the original throughout the edit.
A few useful answers
Choose a mono or stereo MP3/WAV up to 50 MiB and five minutes. Select WAV or MP3, then Reverse & preview. Listen to the actual export and download it. No account, credits, or audio upload is needed.
Yes. Choose MP3 at 128, 192, or 320 kbps. The tool decodes, reverses sample frames, and encodes a new MP3 locally. It is a new lossy export, not a lossless edit to the encoded source; encoding can add delay or padding.
No speed change or channel swap is applied. Time reverses within each channel, so left stays left and right stays right. WAV retains the decoded frame count at 48 kHz. MP3 can include encoding delay or padding.
This tool reverses the whole selected file. Prepare the desired excerpt with the free trimmer or your editor, download it, and choose that copy here. Keep the original start time if you will place the reversed excerpt back in a longer edit.
No. Every sound in the file reverses together. It does not isolate a speaker, remove music, restore damaged words, or interpret speech. Source isolation is a separate Saturalabs service with its own account and download credits.
A 48 kHz, 16-bit PCM WAV with the reversed decoded frame count and the original mono or stereo channel count. Browser decoding may resample the source. Artwork, tags, and original bit depth are not preserved. Input and output must each fit within 50 MiB.
The new opening or ending can meet silence at a nonzero sample value. This reverser applies no automatic fades. Listen to both boundaries and use a short fade or another edit where appropriate. A pre-existing click also reverses with the recording.
It restores sample order if performed on the same unaltered decoded samples. Exporting and reopening can resample, quantize, or apply lossy encoding, so reversing two exported copies is not a way to restore original file bytes or lost audio detail.
After preparing your audio