Music

The Music category gathers both the tools you reach for during practice and the ones that help you see how music is put together. A metronome and tap tempo, a chromatic tuner with note-to-frequency conversion, a circle of fifths showing key signatures and related keys, a guitar capo chart, chord progression generation, and reverse chord lookup — all in the browser.

Practice

Metronome (Online, Free)

A free online metronome for instrument practice that clicks at a set BPM (tempo) and time signature. Tap tempo is also supported.

Note Name to Frequency Converter (Concert Pitch Supported)

Convert between note names (C4, A4, etc.) and frequencies (Hz) for free. Switch the reference pitch (A4 = 440Hz, 442Hz, and more) and check tuning deviation in cents.

Chromatic Tuner (Free, Online)

Play a note near your microphone and this free chromatic tuner instantly detects the pitch of any instrument — guitar, bass, ukulele, violin and more. Reference pitch (A=440Hz etc.) is adjustable, and all audio is proces...

Cents & Transpose Calculator

Convert between cents and frequency ratios, and transpose a reference frequency by a number of semitones or cents. Includes a reference table comparing equal temperament and just intonation cent values, useful for descri...

Circle of Fifths — Click a Key to See Its Signature, Relative Key, and Chords

An interactive circle of fifths showing all 12 major keys. Click any key to instantly see its key signature (number of sharps/flats), relative minor, and diatonic chords.

Guitar Capo Chart & Position Calculator

Pick the song's key and the open chord shape you want to play (C, D, E, G, A, etc.) to instantly find the right capo fret. Includes a full 12-fret chart for every major and minor open shape.

BPM to Delay Time (ms) Calculator

Calculate delay, echo and LFO rate values in milliseconds from a BPM (tempo), across every common note division. Also converts a known delay time back into the BPM it is synced to — a free tool for DAW producers.

BPM Finder (Tap Tempo)

Find the BPM of any song by tapping a button or the space bar in time with the beat. A free tool for quickly figuring out the tempo of a track you don't know.

Chord Progression Generator ― Pick a Key and Play Popular Progressions

Free chord progression generator: pick a key (major or minor) and instantly get popular diatonic chord progressions for songwriting and improvisation, with one-click playback for every progression.

Chord Finder — Identify Chord Names from Notes (Piano Keyboard)

Select the notes on a piano keyboard and instantly find the matching chord name (major, minor, 7th, sus4, add9, and more). A free tool for songwriting, ear training, and improvisation.