Music Theory, Tuning & Notes
Guitar tuner, chord finder, scale generator, key detector, BPM calculator, metronome, ear training, and temperament tools for musicians.
Available Tools
Music Note Detector
Instantly identify any musical note with giant note name display, sharp/flat toggle, cents deviation, note history stream, octave indicator with piano highlight, and audio file upload.
Launch tool →Guitar Note Identifier
Identify guitar notes with fretboard visualization, string and fret detection, alternate tuning recognition, tab notation output, reference tone playback, and multi-string chord detection.
Launch tool →Instrument / Chromatic Tuner
Tune any instrument with needle gauge display, presets for guitar, bass, ukulele, violin, and more, custom tuning creator, strobe mode, reference tone playback, and adjustable A4 reference.
Launch tool →Piano Note Frequency Finder
Interactive 88-key piano showing exact Hz for every key, with click-to-play, search by note or frequency, MIDI number display, equal temperament formula, and printable frequency chart.
Launch tool →Guitar Resonance Frequency Finder
Find your guitar body's natural resonance with tap test mode, frequency response curve, body type comparison database, wolf note finder, and before/after setup comparison.
Launch tool →Chord Finder / Identifier
Identify chords from audio or manual note input with chord name and symbol, inversion detection, guitar and piano diagrams, alternate voicings, play button, and chord quality analysis.
Launch tool →Chord Inversion Tool
View all inversions of any chord with piano keyboard visuals, play each inversion, bass note highlighting, slash chord notation, voice leading suggestions, and frequency display per note.
Launch tool →Chord Progression Generator
Generate chord progressions with key and mode selector, common progressions library (I-V-vi-IV, ii-V-I), random generator, playback with tempo, guitar/piano voicings, genre presets, and MIDI export.
Launch tool →Scale Generator
Generate 30+ scale types in any key with staff notation, piano and fretboard overlays, audio playback, scale degree labels, Hz values, relative scales, and side-by-side scale comparison.
Launch tool →Microtonal Scale Generator
Generate non-standard scales with EDO selector (5-53 divisions), custom cent values, named scales database (Maqam, Slendro, Bohlen-Pierce), audio playback, 12-TET comparison, and Scala export.
Launch tool →Key Signature Finder / Key Detector
Detect the key of any music from audio or note input with confidence scoring, relative major/minor display, sharps/flats count, chords in key, parallel key, and guitar capo suggestions.
Launch tool →Interval Calculator
Find the interval between any two notes with interval name, semitone count, cent value, frequency ratio, melodic and harmonic audio playback, inversion display, and complete reference table.
Launch tool →Transpose Tool
Transpose chords between any keys with from/to selector, semitone shift, bulk chord chart transposition, guitar capo calculator, Nashville number display, and enharmonic preference toggle.
Launch tool →Circle of Fifths Tool
Interactive circle of fifths with click-to-highlight keys, chord quality ring, audio playback per key, key signature display, modulation paths, enharmonic equivalents, and print-friendly view.
Launch tool →BPM / Tempo Calculator
Calculate BPM from timing data with ms-per-beat conversion, note duration table at any BPM, delay time calculator for producers, tempo marking reference, and samples-per-beat for DAW users.
Launch tool →BPM Tap Tool
Tap along with any music to find its BPM with giant tap button, live-updating average, spacebar shortcut, visual pulse animation, min/max/average stats, integer rounding option, and one-click copy.
Launch tool →Metronome
Practice with a precision metronome featuring tap tempo, time signatures (2/4-7/8), accent patterns, sound selector, visual pendulum, subdivisions, tempo ramping, practice timer, and keyboard controls.
Launch tool →MIDI Note Number Converter
Three-way converter between MIDI numbers (0-127), note names, and Hz frequencies with full 128-note reference table, piano visual, audio playback, velocity-to-dB chart, and GM drum map.
Launch tool →Tuning Fork Generator
Generate pure reference tones with one-click A440, preset buttons (A440, A442, Bb, C, E, G), custom frequency input, note selector, volume control, auto-stop timer, and gentle fade in/out.
Launch tool →Solfege Note Trainer
Practice solfege (Do-Re-Mi) with movable and fixed Do modes, progressive difficulty, score tracking, key selector, chromatic solfege support (Di, Ri, Fi), and streak counter gamification.
Launch tool →Ear Training Frequency Tool
Train your ears to identify EQ frequencies with pink noise or music source, 10 frequency bands, adjustable boost/cut difficulty, timed rounds, score history, and detailed per-band feedback.
Launch tool →Perfect Pitch Trainer
Develop absolute pitch with random note identification, multiple instrument timbres (piano, guitar, sine), progressive difficulty, per-note accuracy stats, speed mode, and confusable notes analysis.
Launch tool →A4 Tuning Frequency Tool
Generate and explore the A4 concert pitch with adjustable Hz (415-450), all A octaves listed, baroque/standard/orchestral comparison playback, cents deviation calculator, and historical context.
Launch tool →Custom Tuning Frequency Generator
Create custom tuning systems with per-string Hz input, preset alternate tunings library (DADGAD, Open G, Nashville), per-string playback, cent offsets, save to localStorage, and shareable URL export.
Launch tool →Equal Temperament Frequency Chart
Complete 10-octave reference table (C0-B9) with Hz values, sortable columns, click-to-play, search and filter, formula display, adjustable A4 reference, print-friendly layout, and one-click copy.
Launch tool →Just Intonation Calculator
Calculate just intonation frequencies with side-by-side JI vs 12-TET comparison, audio A/B comparison, common JI ratios, chord builder, beating visualization, and comma calculations explained.
Launch tool →Piano Stretch Tuning Calculator
Calculate piano stretch tuning with Railsback curve visualization, per-key cent offset table, adjustable curve parameters, target Hz per key, A/B comparison, and piano type presets (grand, upright).
Launch tool →Overtone Singing Frequency Analyzer
Analyze throat singing with dual drone/overtone display, harmonic isolation meter, real-time harmonic bars, spectrogram, technique feedback, reference examples (Tuvan, Mongolian), and ratio display.
Launch tool →