ChordCalc is a free piano chord calculator at chordcalc.com. Build a chord by picking a root and quality, see its notes and intervals on a visual piano keyboard, hear it played, and identify chords from the notes you play. ChordCalc also shows inversions and root positions so you can see how the same chord sits across the keyboard.
Chord charts tell you the shape of a chord but not why it works. ChordCalc is built for students, songwriters, and producers who want to see the theory: which notes make up a chord, how intervals define its character, and how inversions change its sound and voice-leading. Everything runs in your browser — nothing to install, no account needed.
ChordCalc is part of a family of free online calculators, including TipCalc, SourdoughCalc, RentFit, and DaysSince. You'll find the full list in the site footer.
Found a bug, or have a suggestion for a feature or chord type? Email us at [email protected] — feedback is always welcome.