Tuner
Tune guitar and bass from the microphone, with ten tunings, an adjustable A4 reference and the offset read in cents. It picks the audio input and can play the note you are looking for.
en / tools / tap-tempo
Tap tempo
The tempo of a track by tapping it with your finger or your keyboard, with the average, the spread and the nearest round value.
Free, in the browser, no account
Click, or press the space bar or Enter.
Average
— BPM
Slowest
— BPM
Fastest
— BPM
0 intervals
The average is over the last eight taps. After two seconds of silence the next tap starts a fresh series, instead of being read as a very slow tempo.
The beat is taken when you press, not when you let go: release latency is not constant and would end up inside every interval.
How it works
- Tap the tempo on the large panel, with the mouse or with the space bar.
- From the second tap the tempo appears; by the fourth or fifth it stops moving.
- Copy the number: the measured one, or the round value if it offers you one.
Why it exists
Because the tempo of a track you are listening to is not written down anywhere. You know it by tapping it, and somebody else has to do the arithmetic while you keep time — which is why every DAW has a tap button, and why nobody uses one from a browser, where you actually need it: while listening to something that is not open in your session.
The delay calculator already has a tap, but there it fills a field and disappears into a table. Here the tempo is the result, so there is room to say how steady it is.
About the average
The average is over the last eight taps, not over all of them. That window is what absorbs an uncertain start: after eight beats the first two taps — the ones where you were still finding the track — have dropped out of the count on their own.
Below it are the slowest and the fastest, and they are there to let you read the average. Two series can have exactly the same mean tempo with one steady and the other lopsided: the average cannot tell them apart, the distance between minimum and maximum can. If those two numbers sit far apart, the track is not speeding up. You are.
About the round value
Someone tapping 119.7 almost always wants 120. Someone tapping 137.2 wants 137, not 135: a tempo is not round just because it ends in five. So the suggestion offers the nearest multiple of five only when it falls within one beat, and otherwise says nothing — and when it says nothing, the whole number to copy is already the big one.
About precision
The beat is taken when you press, not when you let go. It sounds like a quibble and it is not: an HTML button activates with the space bar on release, and the time between pressing and releasing is not constant — it changes with tiredness, with hurry, with the key. Being inconsistent, it does not cancel out in the average: it would land as jitter inside every interval, which is exactly the number this page exists to measure.
About your data
Everything happens in your browser. This site is made of static files and has no server to send anything to, even if it wanted one.
From here you also go here
Music paper
The stave of a melody, a listen, and fresh bars generated in the key and scale you choose, downloadable as a MIDI file.
Note to frequency
Frequency, MIDI number, period and wavelength of any note, with an A4 reference adjustable from 432 to 446 Hz.