How do you convert BPM to Hz?

Divide the BPM by 60 to get beats per second, which is the frequency in hertz for a quarter note. For example, 120 BPM / 60 = 2 Hz. Other note values are multiples or fractions of this base frequency.

What is the period in milliseconds?

The period is the duration of one cycle. For a frequency of f Hz, the period in milliseconds is 1000 / f. At 2 Hz (120 BPM quarter note), the period is 1000 / 2 = 500 ms.

Why would I need Hz values instead of milliseconds?

Many synthesizer LFO sections and modulation sources accept a rate in Hz rather than a time in milliseconds. Using the correct Hz value keeps the modulation locked to the song tempo without manual conversion.

How are dotted note frequencies calculated?

A dotted note lasts 1.5 times its base note, so it cycles more slowly. Its frequency is 2/3 of the base note frequency. For example, a dotted quarter at 120 BPM = 2 Hz x (2/3) ≈ 1.3333 Hz.

How are triplet note frequencies calculated?

Three triplet notes fit in the time of two regular notes, so a triplet cycles faster. Its frequency is 3/2 of the base note frequency. A quarter-note triplet at 120 BPM = 2 Hz x 1.5 = 3 Hz.

What BPM range is supported?

This tool supports 1 to 999 BPM, covering everything from ambient slowcore to the fastest drum-and-bass and gabber tempos.

BPM to Hz Calculator

Name: BPM to Hz Calculator
Availability: InStock
Author: Nham Vu

Enter a BPM value and instantly get the equivalent frequency in Hz and period in milliseconds for whole, half, quarter, eighth, and sixteenth notes.

Tempo Settings

BPM (Beats Per Minute)

Range: 1 – 999 BPM

Quick Presets

Quarter note at 120 BPM

2.0000 Hz

500.00 ms

Frequency & Period Table

Click any value to copy

Standard Notes

Note	Hz	Period (ms)

Dotted Notes (×2/3 Hz)

Note	Hz	Period (ms)

Triplet Notes (×3/2 Hz)

Note	Hz	Period (ms)

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Summary

Enter a BPM value and instantly get the equivalent frequency in Hz and period in milliseconds for whole, half, quarter, eighth, and sixteenth notes.

How it works

Enter your project BPM in the input field.
The quarter-note frequency is calculated as BPM / 60, giving the Hz equivalent.
All other note values are derived by multiplying or dividing that base frequency.
The period (ms) for each note is 1000 / frequency (Hz).
Dotted notes have 2/3 the frequency of their base note; triplets have 3/2 the frequency.
Click any Hz or ms value to copy it to the clipboard.

Use cases

Set an LFO rate in Hz to sync tremolo or vibrato to song tempo.
Dial in auto-pan speed to match a rhythmic subdivision.
Sync a ring modulator or chorus rate to the project BPM.
Verify delay times in Hz-based modulation sections of synthesizers.
Set gate or envelope follower release times to note-locked Hz values.
Teach students the relationship between tempo, frequency, and period.
Quickly compare dotted and triplet subdivisions in both Hz and ms.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu