GrooveLab
Musician utilities for timing, groove, and harmony. No synths—just analysis, visualization, and reference tools.
Music & Timing
Theory, visualization, and timing tools for musicians and producers.
BPM Tool
Convert BPM to milliseconds for precise timing of delays, reverbs, and compressors.
Chord Generator
Build and visualize chords with MIDI export. Select root, quality, and voicing.
Circle of Fifths
Explore key signatures, relative keys, and diatonic chords.
Scale Explorer
Browse scales and modes. View intervals and highlight on the keyboard.
Keyboard Visualizer
Interactive 88-key piano visualization. Highlight chords, scales, and intervals.
Fretboard Visualizer
Highlight chords or scales across guitar, bass, ukulele, or banjo.
Pitch Analyzer
Real-time pitch detection with tuner display and spectrum visualization.
Metronome
Visual metronome with tap tempo, time signatures, and fullscreen flash mode.
Rhythm Grid
Create step-based drum patterns and export MIDI.
Practice Timer
Interval-based timer for focused practice sessions.
Key Finder
Suggest likely keys from a set of notes or chords.
Progression Planner
Build chord progressions from templates or roman numerals.
MIDI Analyzer
Inspect MIDI tempo, duration, tracks, and note density.
Setlist Builder
Organize songs with BPM, key, and notes. Export to PDF or JSON.
Groove Quantizer
Swing grids and MIDI export for groove manipulation.
Sound Tools
Live sound, acoustics, and audio engineering utilities.
Delay Calculator
Calculate speaker delay times for live sound alignment. Adjust for temperature.
Room Mode Visualizer
3D visualization of standing waves and acoustic treatment placement.
Impedance Calculator
Check headphone/amp matching and speaker wiring configurations.
Limiter Calculator
Calculate limiter thresholds to protect speakers from damage.
Geeks
DIY audio electronics and speaker building calculators.