AWG To mm2 Calculator


When working with electrical wiring, it's often necessary to convert between American Wire Gauge (AWG) and square millimeters (mm²). This conversion helps in understanding wire sizes in different measurement systems. Here, we'll provide a detailed guide on how to use an AWG to mm² calculator, the formula involved, and examples to help you make accurate conversions.

How to Use

To use the AWG to mm² calculator, simply enter the AWG value into the input field and click the "Calculate" button. The result will display the corresponding mm² value.


The formula to convert AWG to mm² is based on the diameter of the wire. The diameter (D) in inches for a given AWG can be calculated using the formula:

The cross-sectional area (A) in mm² is then calculated as:

Example Solve

Let's convert AWG 10 to mm² using the formula:

  1. Calculate the diameter in inches:
  1. Convert the diameter to mm:
  1. Calculate the cross-sectional area:

Useful Headings

AWG to mm² Conversion Chart

To help with quick conversions, an AWG to mm² conversion chart can be very useful. This chart lists common AWG sizes and their corresponding mm² values.

Importance of Accurate Wire Sizing

Choosing the correct wire size is crucial for ensuring safety and efficiency in electrical systems. Using a wire that's too small can lead to overheating and potential fire hazards.

Practical Applications

From household wiring to industrial applications, understanding wire sizes is essential for electricians, engineers, and hobbyists alike.


What is AWG?

American Wire Gauge (AWG) is a standardized wire gauge system used in the United States to measure the diameter of electrical conductors.

Why convert AWG to mm²?

Converting AWG to mm² allows for understanding and comparing wire sizes in metric units, which is especially useful in international contexts.

Is the conversion exact?

The conversion formula provides a very accurate approximation suitable for most practical purposes.

Can this calculator be used for any wire type?

Yes, the calculator can be used for any wire type as long as the wire follows the standard AWG specifications.


Converting AWG to mm² is essential for various electrical applications. With the provided formula and calculator, you can easily make these conversions. Accurate wire sizing ensures safety and efficiency in all electrical projects.

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