Life & Health Β· π Global
BPM Tap Counter
Tap the spacebar to measure BPM in real time + built-in metronome + tempo classifications.
About this tool
BPM Tap Tester computes BPM (beats per minute) from spacebar/screen taps in real time. Average BPM appears from the 4th tap, with Β±1~2 BPM precision after 8~16 taps; the measured BPM auto-syncs the built-in metronome. Powered by Web Audio API AudioContext.currentTime, the metronome stays within Β±1ms β far steadier than setInterval-based ones (Β±20~50ms). For DJ mixing (EDM 128 BPM baseline), DAW sync, running cadence (steps/min = BPM), and dance counts. No mic permission required β only keyboard/touch events; nothing leaves your browser.
Use cases
Scenario 1
DJ BPM matching
Tap each EDM track 16 times (128 vs 130 BPM), then sync the metronome for a smooth blend.
Scenario 2
Running cadence match
Measure your run cadence (170 BPM) and pick a K-pop dance playlist at the same BPM to lock pace.
Scenario 3
DAW metronome
Tap the chorus of your new ballad to 72 BPM, then plug it into a DAW for a click track.
Scenario 4
Dance count
Measure 124 BPM, derive an 8-count β 3.87s for choreography timing.
Scenario 5
Karaoke key + BPM
Pair with the noraekey key-shift tool to check both vocal range and tempo before karaoke night.
Features
- Spacebar / screen tap BPM measurement
- Average from 4 taps; Β±1 BPM at 16 taps
- Β±1ms metronome via Web Audio API
- Auto 60~300 BPM normalization (240β120 shown side-by-side)
- Genre BPM guide (ballad 60~80, EDM 120~130, D&B 160~180)
- Unlimited result-card PNG download
Frequently asked
- Q. How accurate is tap measurement?
- A. Β±2 BPM at 8 taps, Β±1 BPM at 16 taps. The first 1~2 taps are dropped and the median of the last 8 is used to reduce noise.
- Q. Same song, different BPM each time?
- A. Likely you tapped a different unit (quarter vs eighth) or sub-beat. 240 BPM is shown alongside 120 BPM.
- Q. Auto audio-file analysis?
- A. Intentionally omitted β onset detection accuracy is low. Use Mixxx, Rekordbox, or Spotify Audio Features for auto analysis.
- Q. Metronome accuracy?
- A. Β±1ms via Web Audio AudioContext.currentTime β far steadier than Β±20~50ms setInterval metronomes.
- Q. Does it use the mic or audio files?
- A. No. Only keyboard / touch events; no mic permission requested. Everything runs in your browser.
Sources / references
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How we run it / disclaimer
This tool is advisory and does not constitute legal, tax, medical, or financial advice. All calculations and document generation run in your browser; inputs are never sent to a server. Ads follow Google AdSense policy and are kept separate from tool accuracy.