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Guitar tuning

Standard

Six strings, E to E — the reference point every other tuning on this site is measured from.

Electric · 6 in line
E2A2D3G3B3E4
Acoustic · 3 + 3
E2A2D3E4B3G3
6th
E2
82.4 Hz
5th
A2
110.0 Hz
4th
D3
146.8 Hz
3rd
G3
196.0 Hz
2nd
B3
246.9 Hz
1st
E4
329.6 Hz

Note names won’t tune your guitar.

Knowing the strings should read E A D G B E is the easy half. Landing each frequency — and knowing whether you are nine cents flat or three — is the half that needs an ear or an instrument.

1
Open Dial and play a string
It listens as soon as you play. Nothing to press.
2
Turn each peg until the needle centres
Work string by string, low E to high E. Dial names each note as you play it.
3
Then go around again
Fresh strings and temperature both drift. A second pass settles it.
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Dial showing the low E string at 82.4 hertz, needle centred

The shape of standard

Four perfect fourths with a single major third between the G and B strings. Chord grips, scale patterns, and nearly all teaching material assume it, which is why every other chart here describes itself relative to standard.

A few chords to try

E
Open
Am
Open
G
Open

Nearby tunings