Boom-bapInstrumental90 BPM
Crate Digger
Made with MiniMax Music 3.0 · Slow it down to practise bars
—
PromptClassic boom-bap hip-hop beat, dusty kick and snare, chopped soul sample, deep bass, head-nod groove, 90 bpm
Free · no upload · WAV export
BPM changer change the tempo, keep the pitch
Load a track, see its detected BPM, dial in a new tempo and preview it — the pitch stays put. Download the re-timed version as a WAV. Everything happens in your browser.
Original
— BPM
New tempo
120 BPM
Analysed on your device — never uploaded
- Tempo changes, pitch stays
- Auto-detects the original BPM
- Runs locally, never uploaded
- Free WAV download
Quick answer
Updated
To change a song's BPM without changing its pitch, time-stretch it. Load the file above: the tool detects the original BPM, you set a new BPM (slider or ±1/5/10 buttons, from 50% to 150% of the original), and Preview plays it at the new tempo with the pitch kept. Download WAV renders the change on your device using WSOLA time-stretching (which re-joins tiny slices of audio at matching points so the tempo changes but the pitch doesn't). The file is never uploaded. Small changes (±10%) sound most natural. Want the pitch to move too — the slowed or nightcore sound? Use the slowed + reverb maker.
- Range
- 50%–150% of the original tempo
- Pitch
- Kept (time-stretch)
- Privacy
- Processed locally
- Export
- WAV, free
Listen first
Tracks to practise with at any tempo
Make an original backing track, then slow it down to learn it and speed it back up as you improve.
Bossa novaInstrumental124 BPM
Rio Afternoon
Made with Ken Music 1.5 · Practise the comping slower
—
PromptBossa nova, nylon-string guitar, soft brushes, flute melody, warm and breezy, Rio beach afternoon, 124 bpm
EDMInstrumental128 BPM
Hands Up
Made with MiniMax Music 3.0 · Match it to a DJ set
—
PromptBig-room EDM festival track, huge build-up, massive drop with punchy kick and lead synth, crowd energy, 128 bpm
Jazz trioInstrumental132 BPM
Last Set
Made with Ken Music 1.5 · Learn the solo at 80%
—
PromptJazz piano trio, swinging piano solo, upright bass, brushed drums, late-night club, 132 bpm
Prompt recipe
When to change BPM
Common reasons — and sensible amounts.
- Practising
- Slow a part to 70–85%, then step back up.
- DJ mixing
- Nudge ±2–6% to match the next track.
- Video edits
- Stretch a cue slightly to land on a cut.
- Workouts
- Match a steady cadence, e.g. 160–180 steps/min.
- Keep it natural
- Changes within ±10% sound cleanest.
1
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3
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5
Or make it at the right BPM
Generate an original track at exactly the tempo you need.
Running 170
High-energy running music, driving drums, uplifting synths, 170 bpm
Use this promptPractice 90
Boom-bap backing beat to rap over, dusty drums, soul sample, 90 bpm
Use this promptDJ 124
Tech house groove, rolling bassline, crisp hats, 124 bpm
Use this promptYoga 70
Calm flowing yoga music, soft pads, gentle hand drums, 70 bpm
Use this prompt
How to
How to use the bpm changer
Step 1: Choose a file
MP3, WAV, M4A or OGG, up to 60 MB.Step 2: Check the detected BPM
The slider starts at the original tempo.Step 3: Set the new BPM
Slider or ±1 / ±5 / ±10.Step 4: Preview
Pitch stays the same.Step 5: Download the WAV
Rendered on your device.
Tips
Cleaner tempo changes
What sounds best.
- Stay within ±10% for the most natural sound.
- Big slow-downs can smear drum hits — that's normal for any time-stretch.
- If the detected BPM is half or double what you hear, set the target the same way.
- Long tracks take longer to export on phones.
- Only process music you have the rights to use.
Engines
Engines for tracks at an exact BPM
Facts from the app's engine list.
| Engine | Length | Modes | Good for |
|---|---|---|---|
| MiniMax Music 3.0MiniMax | Up to 4 min | Song · Lyrics · Instrumental | Follows [Verse]/[Chorus] section tags closely |
| Ken Music 1.5Kenerate | Up to ~3 min | Song · Lyrics · Instrumental | Default engine: full songs with vocals in any language; can take an image as inspiration |
| ElevenLabs Music v2.5ElevenLabs | Exact length, 10 s–10 min | Song · Lyrics · Instrumental | Set the exact duration; clean studio mix |
| Mureka V9.5Mureka | Up to 4 min | Song · Lyrics · Instrumental | Writes its own lyrics from a prompt; style chips; MP3/WAV/FLAC |
Pick the engine in the Music Studio's composer. Every engine runs on the same credit balance.
Make your first track — 25 free credits on sign-up.
Start free
Start free, top up only when you need to
The same credits work for music, voice, images and video.
25 free credits on sign-up
Test on your own images before you buy anything.
Credits never expire
One-time packs — use them this week or next year.
No subscription, no watermark
Nothing to cancel. Free results download clean.
One balance, every tool
The same credits work across images, video, voice and 3D.
In depth
BPM Changer, explained
What works, what to avoid, and how the pieces fit.
How time-stretching works
Simply playing audio faster raises its pitch. Time-stretching avoids that by cutting the audio into tiny overlapping slices and re-joining them closer together (faster) or further apart (slower). WSOLA picks each join point where the waveforms match best, which keeps the result smooth.
Uses
Why people change BPM:
- Musicians — learn fast parts slowly.
- DJs — match tempos between tracks.
- Editors — fit music to a scene.
- Runners and dancers — match a cadence.
FAQ
BPM Changer questions
6 questions
01How do I change the BPM of a song?
Load it into the BPM changer above, set the new BPM, preview it and download the WAV. The tempo changes; the pitch stays the same.
02Can I speed up a song without changing the pitch?
Yes — that's what time-stretching does. The preview uses your browser's pitch-preserving playback, and the export uses WSOLA time-stretching.
03Is the BPM changer free?
Yes — free, no sign-up, and it runs on your device.
04Is my file uploaded?
No. Detection, preview and export all happen in your browser.
05How much can I change the tempo?
From 50% to 150% of the original. Changes within about ±10% sound the most natural.
06What's the difference between this and slowed + reverb?
The BPM changer keeps the pitch. Slowed + reverb (and nightcore) change speed and pitch together, like a turntable.
Explore
Every Kenerate music tool
Songs, lyrics, genres, instrumentals and cover art — one studio, one credit balance.
Written by the Kenerate AI team
We build and run the Kenerate Music Studio. Every demo on this page is a real output of the engine named on it, made from the prompt shown; engine facts were checked against the app's code. Last updated 28 September 2026. Corrections: support@kenerateai.com.
Sources
Ready when you are
Try the bpm changer
25 free credits on sign-up. No watermark. Credits never expire.
- 25 free credits
- No watermark
- Credits never expire
