| String | Note | Frequency |
|---|---|---|
| 6 | D2 | 73.42 Hz |
| 5 | G2 | 98.00 Hz |
| 4 | D3 | 146.83 Hz |
| 3 | G3 | 196.00 Hz |
| 2 | B3 | 246.94 Hz |
| 1 | D4 | 293.66 Hz |
Tuning to open G
Start the tuner and allow the microphone, then work from the low string up:
- 6th string, E → D2. The tuner reads Tune down 2 semitones; loosen until the needle is green.
- 5th string, A → G2. Also two semitones down.
- 4th, 3rd and 2nd strings stay at D3, G3 and B3: just check them.
- 1st string, E → D4. Down two semitones, one octave above the 4th string’s D3 and two above the 6th.
Strum all six open strings: in tune, you hear a full G major chord with no beating. The string dots should all be green, meaning each is within ±3 cents of its target.
Barre chords for free
With the open strings forming a G chord, a single finger laid across all strings at a fret plays a major chord: the 5th fret gives C, the 7th gives D, the 12th G again an octave up. A slide across the strings works the same way. The tuner’s targets are equal-tempered, so chords up the neck match a piano or a band in standard tuning.
Back to standard
Choose Standard in the tuning menu and the same three strings read Tune up 2 semitones until they are back at E2, A2 and E4. The DADGAD tuner and the open D tuner cover the other common open tunings.