BPM Changer
Auto-detect BPM, adjust tempo, preview in real time, and export — all processing happens locally in your browser.
Drag and drop audio files here, or click the button below to add files.
Change tempo in a way that matches DJ reality
A BPM changer is useful when your track selection is right but the tempo is not. Slow down a song that rushes ahead of your set, speed up a track that drags, tighten a set range, or build warm-up versions that match the energy you need.
The important part is not only changing BPM, but deciding when to preserve pitch, how far to push the speed safely, and when a prepared export is better than forcing the fader live.
What this BPM tool is built for
Check whether a track still feels right at the target speed before committing to a full export or set change.
Use preserve-pitch mode when harmonic consistency matters, or leave pitch movement in when the natural shift is part of the sound.
Everything runs locally, which makes it practical for unreleased tracks, quick edits, and lightweight prep on any machine.
A clean BPM-change workflow
- Detect the original BPM first, then decide whether you are making a subtle prep edit or a more noticeable creative change.
- Stay conservative on vocal or melodic tracks, especially if the final playback system is revealing and you expect to use key lock.
- Export the adjusted version, label it clearly, and test it in the DJ software or player you actually use on stage.
BPM changer FAQ
How much can you change BPM without ruining a track?
Small moves are usually safest. Around 1 to 3 percent is rarely a problem, while larger changes depend on the source file, the material, and whether you preserve pitch.
Should I always keep pitch locked?
No. Pitch lock helps when you need harmonic consistency, but every time-stretching algorithm adds some processing. Small adjustments often sound better without it.
Why prepare a BPM edit before the set instead of riding pitch live?
Prepared edits are useful when you already know the target range and want a cleaner, repeatable result without pushing hardware or software too far in real time.
Can I use this as a song speed changer to slow down or speed up music?
Yes. Changing BPM is the same as changing playback speed: set a lower BPM to slow down a song for practice or slowed edits, or a higher BPM to speed it up. Enable preserve pitch to keep the key stable while the speed changes.
Is a BPM changer the same as a tempo changer?
Yes — BPM (beats per minute) is simply how tempo is measured, so a BPM changer and a tempo changer do the same job. This tool detects the current tempo of your track and time-stretches it to the target BPM.
Use the BPM guide to make better tempo decisions, the audio formats guide to judge source quality, and the audio converter when a prepared edit also needs a new format.