Enter the gauge number into the calculator to determine the thickness in millimeters.

Gauge To Mm Calculator

Enter two values to calculate the missing one

Gauge ↔ Thickness (Steel, mm)
Gauge to mm mm to Gauge
3 gauge = 8.8820 mm0.50 mm = 11.9732 gauge
4 gauge = 7.9480 mm0.75 mm = 11.7062 gauge
5 gauge = 7.0140 mm1.00 mm = 11.4383 gauge
6 gauge = 6.0800 mm1.50 mm = 10.9036 gauge
7 gauge = 5.1460 mm2.00 mm = 10.3689 gauge
8 gauge = 4.2120 mm3.00 mm = 9.2976 gauge
9 gauge = 3.2780 mm4.00 mm = 8.2263 gauge
10 gauge = 2.3440 mm6.00 mm = 6.0848 gauge
Formulas (linear): t(mm) = 11.684 − 0.934×ga; ga = (11.684 − t)/0.934.
Gauge ↔ Thickness (Aluminum, mm)
Gauge to mm mm to Gauge
1 gauge = 11.4300 mm0.80 mm = 9.3701 gauge
2 gauge = 10.1600 mm1.00 mm = 9.2126 gauge
3 gauge = 8.8900 mm1.27 mm = 9.0000 gauge
4 gauge = 7.6200 mm2.00 mm = 8.4252 gauge
5 gauge = 6.3500 mm3.00 mm = 7.6378 gauge
6 gauge = 5.0800 mm4.00 mm = 6.8504 gauge
7 gauge = 3.8100 mm5.00 mm = 6.0630 gauge
8 gauge = 2.5400 mm6.35 mm = 5.0000 gauge
Formulas (linear): t(mm) = 12.7 − 1.27×ga; ga = (12.7 − t)/1.27.

Gauge To Mm Formula

The following formula is used to convert gauge to millimeters for sheet metal.

mm = 11.684 - (0.934 * G)

Variables:

  • mm is the thickness in millimeters
  • G is the gauge number

To calculate the thickness in millimeters, subtract the product of 0.934 and the gauge number from 11.684. This formula is specific to sheet metal and may not apply to other materials.

What is a Gauge To Mm?

Gauge to mm is a conversion used to measure the thickness of materials such as metal and plastic. Gauge is a standard unit of measure for sheet metal and wire products, but it is not universally standardized and varies between material types. Therefore, it is often converted to millimeters (mm) for a more universally understood measurement. The higher the gauge number, the thinner the material. For example, a 16 gauge metal is thinner than a 10 gauge metal.