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AltTuningLab

7-String Drop G Gauges for a 26.5-Inch Guitar

Drop G asks a seven-string to reach baritone-adjacent territory. The extra inch of scale length is part of the setup: it helps the low G remain usable without choosing an excessively large string.

Tuning
G D G C F A D
Strings
7
Scale length
26.5 in

.011–.070 is the calculated starting point

For a 26.5-inch guitar, begin at .011–.070. This calculated set supports the low G while keeping the higher strings proportionate to the tuning.

Estimated tension at 26.5 inches

Calculated from pitch, gauge, scale length, and a plain or wound construction estimate.

Total pull116.6 lb
Average / string16.7 lb
Set spread6.0 lb

Scroll sideways to see all columns.

StringPitchGaugeBuildEstimated tension
7G1.070wound13.7 lb
6D2.052wound17.0 lb
5G2.042wound19.8 lb
4C3.030wound18.0 lb
3F3.018plain16.0 lb
2A3.014plain15.3 lb
1D4.011plain16.9 lb

Compare nearby gauges at the same pitch

The calculator holds G1 and 26.5 inches constant, then changes only the wound low-string gauge.

.068
13.0 lb
.070 Starting point
13.7 lb
.072
14.5 lb

Use the table to make a confident adjustment

The low .070 is deliberately substantial, but it should not be interpreted as a universal requirement. A player with a light touch may prefer .068; a shorter-scale instrument may need a different compromise entirely.

Plan for the full guitar setup

  1. 1Measure the actual scale length before copying this recommendation to a different guitar.
  2. 2Have the nut checked before installing a .070 string; forcing a large string through a narrow slot can cause binding.
  3. 3Re-check intonation, neck relief, and action after the change.

7-string Drop G string-gauge FAQ

What gauge should the low G be?
On a 26.5-inch guitar, .070 is a sensible calculated starting point. Compare nearby gauges in the calculator based on your picking attack and target feel.
Can a 25.5-inch seven-string handle Drop G?
It can be set up for it, but the low string will generally need a different gauge and setup compromise. Enter the 25.5-inch scale length in the calculator rather than copying this table.