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Free BPM Finder & Key Finder
Two ways to get your numbers: tap along to any song for an instant tap-tempo BPM, or drop an audio file and the analyzer detects both the tempo and the musical key — with the Camelot code DJs use for mixing. Everything runs in your browser; your audio never leaves your device.
- What it does
- BPM + song key detection
- Two modes
- Tap tempo or audio file
- Privacy
- Runs in your browser — no upload
- Price
- Free · no sign-up
One page, both numbers
Most BPM finders make you choose: a tap tempo pad with no key detection, or an uploader that sends your unreleased track to someone's server. This one does both jobs locally — tap for a quick reading, or drop the file for BPM plus key with the Camelot code — and your audio never leaves the device. When the numbers are in, SunoMV can turn the same song into a lyric-synced music video.
How to find a song's BPM and key
Three steps, nothing to install, nothing uploaded.
- 1
Pick your mode
Tap Tempo when the song is playing anywhere; Analyze a File when you have the audio itself.
- 2
Tap or drop
Tap the pad (or spacebar) on the beat — or drag in an MP3, WAV, M4A, OGG or FLAC.
- 3
Read BPM and key
Get the tempo, the detected key with its relative, and the Camelot code for harmonic mixing.
How the tap tempo BPM tapper works
Tap the pad — or the spacebar — in time with the beat and the BPM tapper converts your tap intervals into beats per minute. It averages your most recent eight taps, so the number steadies within a bar or two, and a two-second pause resets the run for the next song. That's all a tap BPM tool needs: your ears, a steady finger, and about ten seconds.
- Averages your last 8 taps — One rushed tap won't wreck the reading — the rolling average smooths out human timing.
- Spacebar or click — Tap with the keyboard while the song plays in another tab, or click the pad on your phone.
- Auto-reset between songs — Pause two seconds and the next tap starts a fresh measurement — no reset hunting mid-set.
A key and BPM finder that reads the file itself
When you have the actual audio, skip the tapping: the analyzer decodes your file locally, follows the energy of the beat to estimate tempo, and builds a harmonic fingerprint of the track to detect its key. You get BPM, the song key (like C Major or A Minor), its relative key, and the Camelot wheel code — the shorthand DJs use to pick harmonically compatible tracks.
- BPM from the waveform — Onset detection plus autocorrelation locks onto the beat grid — typically within ±2 BPM on steady tracks.
- Song key detector with Camelot — The key detector matches the track's harmonic profile against all 24 major and minor keys, then adds the Camelot code for mixing.
- Nothing is uploaded — Decoding and analysis happen entirely in your browser — your song never touches a server.
Why BPM and key matter for your own releases
Tempo and key are the two numbers that make your music usable — by you and by others. Producers match samples and loops by BPM; DJs build sets by Camelot-compatible keys; editors cut video to the beat grid. If you make songs with AI tools like Suno, knowing the BPM of your track tells you exactly how to pace cuts, captions and scene changes when you turn it into a video.
- Match loops and samples — Knowing the exact tempo lets you drop a track into any DAW project without time-stretch guesswork.
- Mix in key — Adjacent Camelot codes (8B → 9B, or 8B → 8A) blend smoothly — the whole point of harmonic mixing.
- Cut video on the beat — A 120 BPM song has a beat every 0.5 s — sync your edits, lyrics and transitions to that grid.
Who uses a BPM and key finder
Anyone who needs a track's numbers before the next creative step.
Producers and beatmakers
Match samples, set the project tempo, and check what key a reference track sits in before you build around it.
DJs planning sets
Read the Camelot code and line up harmonically compatible transitions instead of clashing keys.
AI-music creators
Made a song in Suno? Get its BPM and key, then cut a lyric-synced music video timed to the same grid.
From numbers to a finished video
The rest of the SunoMV toolkit picks up where the analysis ends.
FAQ'S
Frequently Asked Questions
Ask us anything!
Got your BPM? Give the song a video
Paste your Suno song link into SunoMV and get a lyric-synced music video in minutes — cuts and captions timed to the beat you just measured. Free to try.