Change the Tempo of a Song
Drop a track, type the BPM you want, and download it at the new tempo. The key stays the same.
Drop your track
or click to browse — MP3, WAV, OGG, FLAC
How do you change the BPM of a song?
The change in percent is (new BPM / old BPM - 1) x 100, so going from 120 to 128 BPM is +6.7%. Time-stretching changes the tempo without changing the key. Up to about 3% is hard to hear and up to about 16% is usable; beyond that, check whether half or double time is closer.
How far can you stretch a song?
The change is a percentage of the original tempo. From a 120 BPM track:
| New tempo | Change |
|---|---|
| 124 BPM | +3.3% |
| 128 BPM | +6.7% |
| 140 BPM | +16.7% |
| 100 BPM | -16.7% |
| 90 BPM | -25.0% |
Up to about 3% is hard to hear. Up to about 16% is usable on most music. Beyond that a track starts to sound stretched, so for a big jump check whether the other track lines up at half or double time first. To match one song to another, Compare Two Songs works out the exact BPM, and the beat matching guide explains the rest.
Frequently Asked Questions
How do I change the BPM of a song without changing the pitch?+
Can I speed up a song and keep the key?+
Is it free?+
What if the detected BPM is wrong?+
Related
Compare Two Songs
Drop two tracks: see if they mix, and exactly how far to move the second one.
Read more →Camelot Wheel
Click a key to light up every key it mixes with. Or drop a track to find its code.
Read more →Mashup Maker
Match a second song to the first, line them up and hear them together.
Read more →