Enter the gauge number into the calculator to determine the thickness in inches. This calculator can also evaluate any of the variables given the others are known.

Gauge To Inches Formula

The following formula is used to calculate the thickness in inches from the gauge number for sheet metal.

T = G / 39.37


  • T is the thickness in inchesG is the gauge number

To calculate the thickness in inches, divide the gauge number by 39.37. This formula is based on the standard that 1 gauge is equal to 1/39.37 inches.

What is a Gauge To Inches?

Gauge to inches is a conversion method used to convert the thickness of a material measured in gauge number to inches. This is commonly used in industries such as manufacturing and construction, where materials like sheet metal, wire, or pipes are often measured in gauges. The gauge number and thickness in inches are inversely related, meaning a higher gauge number indicates a thinner material.

How to Calculate Gauge To Inches?

The following steps outline how to calculate the Gauge To Inches using the formula: T = G / 39.37

  1. First, determine the gauge number (G).
  2. Next, use the formula T = G / 39.37 to calculate the thickness in inches (T).
  3. Finally, calculate the Gauge To Inches.
  4. After inserting the gauge number (G) and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

gauge number (G) = 16