Gauge to Millimeter Calculator

Convert wire gauge to millimeters using the American Wire Gauge (AWG) system

Input Parameters

Calculation Results

Calculation Formula

Diameter (mm) = 0.127 mm × 92^(36-gauge)/39

Where:
gauge = wire gauge number
Diameter = wire diameter in millimeters

Gauge to Millimeter Calculator Usage Guide

Learn how to use the Gauge to Millimeter Calculator and understand the AWG system

How to Use This Calculator

  1. Enter the wire gauge number (AWG) in the input field. The AWG system ranges from 0 to 40, where 0 represents the thickest wire and 40 represents the thinnest.
  2. Click the "Calculate" button to convert the gauge to millimeters.
  3. The calculator will display the wire diameter in millimeters based on the American Wire Gauge formula.
  4. Use the "Reset" button to clear all inputs and start over.

About the American Wire Gauge (AWG) System

The American Wire Gauge (AWG) is a standard system for specifying the diameter of round, solid, non-ferrous, electrically conducting wire. The AWG system is based on the number of times the wire is drawn through a die to reduce its diameter.

The relationship between AWG number and diameter is logarithmic. As the AWG number increases, the diameter decreases. For example, AWG 0 wire has a diameter of approximately 0.3249 mm, while AWG 40 wire has a diameter of approximately 0.0714 mm.

Applications

This calculator is useful for:

  • Electrical engineers and technicians working with wire sizing
  • Manufacturers of electrical components
  • Hobbyists working on electronics projects
  • Anyone needing to convert wire gauges for specific applications