ChordMetric
Menu
ChordsScalesKeys & TheoryToolsPrintAbout

Keyboard reference

Piano Keyboard Notes Chart

See every piano key, octave number, middle C and a printable blank keyboard.

C4Middle CC♯4D4D♯4E4F4F♯4G4G♯4A4440 HzA♯4B4

Scientific pitch notation places middle C at C4. The sharp/flat control is a display preference for isolated keys, not a universal spelling decision.

Piano Keyboard Notes Chart

Switch between a compact octave and all 88 keys. Scientific pitch notation labels middle C as C4 and A4 as the 440 Hz reference.

The lowest key on a standard 88-key piano is A0 and the highest is C8.

Read the result

The text answer, formula and labelled visual are equivalent views of the selected state. A sharp/flat display preference helps label isolated keys; it does not override key-aware spelling in chords and scales.

Connected theory

Follow the selected root or tonic into its hub, then into the relevant key, interval or inversion reference. Contextual links use the active subject rather than the same generic list on every page.

Try a controlled comparison

Change one selector at a time and describe what changed in the notes, degrees, bass or signature. Generated audio is optional and user initiated.

  • Keep the root fixed and change quality.
  • Keep the structure fixed and transpose.
  • Compare the visible text with the keyboard.

Keep exploring

Use the related links to compare the answer with another tool or read the musical idea in more detail.