Upload a steady track
Choose audio with a clear pulse and let the page estimate its starting tempo.
Free Audio BPM Changer
Audio BPM Changer
Match audio to a new BPM without doing the timing math yourself. Enter the original and target tempo, preview the change, and export the retimed file.
Use the toolChange a track from one BPM to another
Use the correct starting BPM and make moderate changes when sound quality matters. Large tempo moves can stretch attacks, speech, and sustained notes.
Use the toolConfirm the original BPM
Check whether the detected value matches the music, including possible half- or double-time interpretations.
Enter the target BPM
Choose a new tempo between 40 and 240 BPM.
Preview the timing change
Listen for rhythmic fit and sound quality before downloading the retimed WAV.
BPM-change examples for mixes and practice
The difference between starting and target tempo determines both the new duration and how noticeable the transformation becomes.
120 BPM to 128 BPM
A modest increase shortens the track slightly and can help align it with a faster project.
90 BPM to 100 BPM
A moderate lift can make a practice loop feel more energetic while preserving its key.
Detected as 70 instead of 140
Correct the original value to the interpretation you intend before setting the target.
Retiming audio without creating obvious artifacts
Prefer modest adjustments
Small changes usually preserve transients and texture better than dramatic retiming.
Verify the downbeat
BPM alone does not align the first beat, so editing may still be needed when synchronising tracks.
Expect duration to change
A higher target BPM shortens the audio; a lower target BPM makes it longer.
BPM Changer FAQ
Does the tool detect the original BPM?+
Yes. It estimates the source tempo when the file is loaded, and you can correct the value.
What BPM range can I choose?+
Original and target fields accept values from 40 to 240 BPM.
Will the pitch stay the same?+
The transformation is designed to change timing while keeping pitch approximately stable.
Why does a large BPM change sound less natural?+
Strong retiming can blur attacks and textures, especially in dense or complex audio.