Free music theory tools

Identify any chord for guitar, piano or ukulele. See the exact fingering or keys to press, hear every note, and switch between C-D-E and Do-Re-Mi note names.

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Visualize any scale on a guitar fretboard. Choose from 277 scales and modes — Major, Pentatonic, Blues, Church Modes, Melodic Minor, and more. Hear the scale with BPM playback and navigate multiple neck positions.

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Interactive Circle of Fifths. Click any key to instantly see its diatonic chords, relative minor, and neighbouring key relationships.

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Shift any chord progression to any key in one click. Perfect for finding the right key for your voice or instrument.

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Enter a progression and detect the musical key it belongs to. Understand the tonal center of any chord sequence.

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Play, learn and create 4-string bass tabs in your browser. Real-time playback, drag & resize notes, Tab/Grid/Bass views, and 10+ preset songs including Billie Jean and Beat It.

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Play, learn and create 6-string guitar tabs in your browser. Draw notes on any string and fret, chord helper for one-click chords, capo support, and real-time playback.

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Free tuner with real instrument sounds — pick bass (4 or 5-string), electric guitar, acoustic guitar, or ukulele, choose a tuning like Drop D, DADGAD, or BEAD, then tune by ear or with your microphone.

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Free online metronome with tap tempo, beats per measure (1–8), and keyboard shortcuts. Web Audio precision — no drift, no install.

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Free 16-step drum machine with 3 kits and 12 genre presets — house, trap, hip-hop, afrobeat and more. No signup required.

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