Beat Finder: Find the BPM and Beat Grid of Any Song
Drop in a track and this beat finder detects its tempo in BPM, places a beat grid you can hear with a click track, and shows whether the tempo changes. Free, no sign-in, and your audio never leaves your device. Built by MusicGenerator.so.
The beat finder analyses audio on your device. Nothing is uploaded.
How to find the BPM of a song in 3 steps
- 1
Drop your audio file
Choose an MP3, WAV, M4A, OGG or FLAC file up to 50 MB. The beat finder decodes it in your browser.
- 2
Read the BPM
The beat finder shows the tempo, the half-time and double-time values, the key and how many beats it found.
- 3
Check it by ear
Press Play to hear a click on every detected beat, or tap along with Tap tempo to confirm the number.
Why use this beat finder
What is a beat finder?
A beat finder is a tool that listens to a recording and works out its tempo in beats per minute (BPM) and where each beat falls. DJs, producers, dancers and video editors use a beat finder to match tracks, set a DAW tempo or cut on the beat.
Private by design
This beat finder runs entirely in your browser. Your track is analysed on your device; no audio is sent to our servers.
Honest about the result
Every reading comes with half-time and double-time values, because any beat finder can count a groove at half or double speed.
Not a beat marketplace
This beat finder measures beats in audio you already have. If you need a new beat, the AI music generator can create an original instrumental at the BPM you choose.
Who it’s for
DJs
Use the beat finder to get the BPM of tracks before beatmatching or building a set.
Producers
Find the tempo of a sample or reference track and set your DAW to match.
Dancers & fitness
Check that a song’s BPM fits your choreography, class or running pace.
Video editors
Use the beat grid to cut footage on the beat.
How the beat finder works
No guesswork and no server: here is what the beat finder does with your file.
1. Decode in the browser
The beat finder opens your track right in the browser.
2. Hear the hits
It listens for the kicks, snares and other hits that drive the groove.
3. Lock onto the beat
It finds the steady pulse between 40 and 208 BPM and marks exactly where each beat lands.
4. Key, danceability and loudness
It works out the key and scale, how danceable the groove feels and how loud the track is overall, and checks each 20-second section for tempo changes.
Beat finder features
BPM to one decimal
The beat finder reports whole BPM when the tempo is on the grid and one decimal when it is not.
Half and double time
See 2 alternatives so the number matches how you count the groove.
Beat grid + click track
Hear a click on every detected beat to verify the beat finder by ear.
Tempo-change check
BPM for each 20-second section shows whether the track speeds up or slows down.
Nothing uploaded
Audio stays on your device — safe for unreleased demos.
Key & scale
See the key (for example A minor) so you can mix harmonically or match a sample.
Tips for an accurate BPM
- Use a section with drums: a clear kick and snare give the beat finder the strongest pulse.
- Slow intros, breakdowns and rubato passages are harder to read; try a full chorus or verse.
- If the number feels twice too fast or slow, use the half-time or double-time value.
- Hip-hop usually sits around 85–100 BPM, house around 120–128 and drum and bass around 170–175 — a quick sanity check.
- Press Play and listen: if the clicks drift away from the drums, tap along to confirm.
- Live recordings without a click can drift; read the per-section BPM list.
Beat finder vs other ways to get a BPM
How the main options compare.
| This beat finder | Tap tempo only | Looking up a BPM database | |
|---|---|---|---|
| Works on any file | Yes, including unreleased audio | Yes, by hand | Only for released songs |
| Beat grid | Yes, with click track | No | No |
| Tempo changes | Per 20-second section | No | No |
| Uploads your audio | No | No | Not needed |
| Cost | Free, no sign-in | Free | Usually free |
Found the BPM? Make a new beat with MusicGenerator.so
The beat finder measures existing audio. With MusicGenerator.so you can generate an original instrumental or a full song at the tempo you just found, write lyrics with AI and split any track into stems.
- Original instrumentals from one prompt — add “120 BPM” to the style
- Vocal Remover and stem splitter
- Audio to MIDI and Pitch Finder
- Commercial license on paid plans
Tempo detection is automatic and can be wrong on music without a steady pulse. Always check important values by ear.
Frequently asked questions
More free AI music tools
Ready to find the beat?
Drop a track into the beat finder and get its BPM in seconds — free and private.
Last updated October 2026.