Start Tuner

Strobe Needle Meter

Tuning for Equal Temperament · 440 Hz

Uses your microphone. Nothing is recorded or sent anywhere.

Input Monitor

Boosts the microphone and shows how much signal is reaching the tuner.

Gain

6.0×

Level

−∞ dB

Reference Pitch

A4 = Hz

392 French Baroque "Tone de Chambre" 415 Baroque 432 Verdi "Scientific" 440 Standard 444 Modern "Symphony" 466 Italian Renaissance

Tuning Standard

Retunes every note by a few cents to a historical or alternate temperament, instead of modern Equal Temperament.

Standard

Test Tone A4

Feeds a pure tone straight into the tuner (and your speakers) — no microphone needed.

G♯4 A4 A♯4

Volume

Frequency (Hz)

440 Hz

Fine Tuning (¢)

0¢

Frequency Table

Every note of an 88-key piano, in Hz, under each reference pitch standard.

Standard

Note