What is Guitar/Instrument Tuner?

A chromatic instrument tuner that uses your device's microphone to detect pitch in real time. Works with guitar, bass, ukulele, violin, and any other instrument. Shows the detected note, how many cents sharp or flat you are, and a visual tuning meter.

How to use

1. Step 1 — Allow microphone access when prompted, then play a single note on your instrument close to the microphone.
2. Step 2 — Watch the tuning display: it shows the detected note name, octave, frequency in Hz, and a needle showing cents deviation from perfect pitch.
3. Step 3 — Adjust your tuning peg until the needle centers and the display turns green, indicating the note is in tune (within ±5 cents).

Result

Tune a guitar to standard tuning (E2 A2 D3 G3 B3 E4): pluck the low E string — the display shows 'E2' at 82.4 Hz. Adjust until the needle is centered.

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