6 browser-based tools

Music & Audio

Practical timing, pitch, sample, and tempo helpers for musicians and producers.

Explore music & audio tools

Choose a tool for an immediate answer. Inputs stay on this device unless the page clearly says otherwise.

BPM Duration Calculator

Find beat, bar, and note durations from a tempo in BPM.

Milliseconds to BPM

Convert the duration of one beat in milliseconds into tempo.

Note Frequency Calculator

Find the equal-tempered frequency of a musical note using adjustable concert pitch.

Semitone Frequency Calculator

Transpose a frequency up or down by any number of semitones.

Sample Duration Calculator

Convert an audio sample count and sample rate into time.

Tempo Delay Calculator

Calculate synced delay times for common note divisions at any tempo.

Designed for quick, reliable answers

These tools put the useful part first. Each page explains the calculation or transformation it performs, includes practical examples, and links to closely related utilities.

No account is required, and these utilities work entirely in your browser.