Change a song’s tempo to any BPM
Detect the current tempo, type the BPM you want, and retempo the track — pitch preserved. Free, in your browser. Perfect for beatmatching, mashups, and practice.
Why the Notevibes BPM Changer
Type a target BPM
We auto-detect the song’s current tempo, so you just enter the BPM you want — no guessing multipliers.
Pitch stays natural
Time-stretching keeps the original pitch — voices and instruments sound right at any tempo, no chipmunk.
Made for DJs & dancers
Match two tracks for a mashup, beatmatch a set, or slow a song down to learn the moves or the parts.
Instant in your browser
Detection runs on our server; the stretch happens locally and previews before you download.
Private by default
The audio is processed for the BPM read and discarded — the retempo itself never leaves your browser.
Finish in the editor
Want to also change the key, trim, or add effects? Open the result in the AI editor and just ask.
How it works
Upload a song
Drop any track — we detect its current BPM automatically.
Enter the target BPM
Type the tempo you want; we compute the exact stretch from the detected BPM.
Preview & download
Hear it at the new tempo, then download as MP3 or WAV.
Want to change the key too? Open it in the AI editor.
BPM Changer FAQ
How do I change the BPM of a song?
Upload the song — we detect its current BPM automatically — then type the target BPM. We time-stretch the track to the new tempo while keeping the pitch the same, and you download the result.
Does changing the BPM change the pitch?
No. Only the tempo changes; pitch is preserved, so voices and instruments stay natural with no chipmunk effect. (If you want to also shift the key, do that in the editor.)
How much can I speed up or slow down?
Up to 4× faster or down to a quarter of the original tempo. Very large changes can introduce some stretching artifacts.
What if the detected BPM looks wrong?
You can edit the “current BPM” field by hand — the target stretch recomputes from whatever you set.
What formats can I use?
MP3, WAV, M4A, FLAC, OGG, and AAC. You can download the result as MP3 or WAV.
Is it free?
Yes — the BPM Changer is free to use in your browser.
Convert Any Audio Format
Free browser-based converters for every major audio format — no sign-up, no upload.