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How to tune a Guitar

Standard tuning from the thickest string is E–A–D–G–B–E. Alternate tunings like Drop D, half step down, Open G and DADGAD are one tap away.

Notes

#NoteFrequency (A4 = 440)
1E282.41 Hz
2A2110.00 Hz
3D3146.83 Hz
4G3196.00 Hz
5B3246.94 Hz
6E4329.63 Hz
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Step by step

  1. Allow microphone access when your browser asks (audio stays on your device).
  2. Play one note and let it ring. The tuner detects which string or note you are playing.
  3. Follow the needle: left means flat (tighten / raise), right means sharp (loosen / lower).
  4. When the note turns green you are within ±3 cents. Move on to the next one.

Pro tip

Always tune up to the note: if you are sharp, drop below and come back up so the string settles on the gear.

Frequent questions

Is this tuner free?

Yes. It runs in your browser with no download or account.

Is my audio recorded?

No. The sound is analysed on your device and never uploaded.

What is A4 = 440 Hz?

The reference pitch for the note A above middle C. Some orchestras use 442 Hz and early-music groups 415 Hz; you can change it.

Tune other instruments

Bass Tuner

E1 · A1 · D2 · G2

Ukulele Tuner

G4 · C4 · E4 · A4

Violin Tuner

G3 · D4 · A4 · E5

Cello Tuner

C2 · G2 · D3 · A3

Banjo Tuner

G4 · D3 · G3 · B3 · D4

Flute Tuner

A4 · Bb4 · F4

Alto sax Tuner

C4 · F4 · Bb4

Trumpet Tuner

Bb3 · F4 · Bb4

Clarinet Tuner

Bb3 · F4 · Bb4

Timpani Tuner

D2 · G2 · C3 · E3

Drum kit Tuner

G2 · C3 · F3 · A#3

Handpan Tuner

D3 · A3 · Bb3 · C4 · D4 · E4