Tap Tempo & BPM Calculator

Example values at 120 BPM

How to find BPM by tapping

Tap the large button along with a steady beat. The estimate uses the intervals between your taps, so a few even taps give a more useful result than a single tap. Reset when you start a new song or change pace.

BPM means beats per minute. A pulse can sometimes be counted at half or double the displayed rate. Use those buttons to choose the interpretation that fits your music, then check it against the short audible pulse if useful.

Turn BPM into delay times

One quarter-note beat lasts 60,000 divided by BPM milliseconds. At 120 BPM, that is 500 ms. An eighth note lasts 250 ms, and a dotted eighth lasts 375 ms.

Copy a value into an effect that asks for milliseconds. Dotted notes are one and a half times the straight duration; triplets are two thirds. Reverb timings are starting points for experimentation, rather than a prescription for every sound.

Fit a loop to bars and sample frames

Choose Fit a loop to calculate a duration from quarter-note BPM, bars and time signature. Or supply a known duration and a counted number of bars to calculate the corresponding BPM. That calculation depends on your bar count; it is not automatic audio detection.

At 120 BPM, one 4/4 bar lasts two seconds: 96,000 frames at 48 kHz. Some tempo and length combinations fall between whole frames. The result reports the rounded frame count, its actual duration and the small difference from the ideal time.

Calculate a linked speed and pitch change

Change speed compares original and target BPM, or starts from a semitone shift. It returns playback rate, percentage change, pitch shift and an optional new duration. Increasing 120 BPM to 132 BPM means 1.1 times the rate: 10% faster and about 1.65 semitones higher.

These are varispeed relationships, where pitch and duration change together. This calculator does not process a file or preserve pitch while changing tempo. Use the values in music software whose speed control follows that behavior.

A counter, not an audio detector

This tool measures your taps and calculates times. It does not listen to a microphone, analyze a song file or identify a musical key. The result depends on the beat you choose and how steadily you tap.

All calculations happen in your browser. No account or audio upload is needed. Your browser may offer to copy values to its clipboard; you can also select a number directly.

Common questions