Circular Mils Calculator

Circular Mils Calculator calculator can be used to calculate the cross-sectional area of a wire or conductor in circular mils, which is a unit of area used in electrical engineering.

Input Parameters

Calculation Results

Calculation Formula

Area (Circular Mils) = π × (diameter / 2)²

Where:
π (pi) ≈ 3.14159
diameter is the diameter of the wire or conductor in inches

Circular Mils Calculator Usage Guide

Learn how to use the Circular Mils Calculator calculator and its working principles

What is a Circular Mil?

A circular mil is a unit of area used primarily in the electrical industry to measure the cross-sectional area of electrical conductors. It is particularly useful for calculating the resistance of conductors.

How to Use the Calculator

  1. Enter the diameter of the wire or conductor in inches in the "Diameter" field.
  2. Click the "Calculate" button to compute the area in circular mils.
  3. The result will be displayed in the "Result" field.
  4. If you want to start over, click the "Reset" button.

Example

If you have a wire with a diameter of 0.25 inches, the calculation would be:

Area = π × (0.25 / 2)² = π × (0.125)² ≈ 3.14159 × 0.015625 ≈ 0.049087 circular mils

Applications

Circular mils are used in electrical engineering to:

  • Calculate the resistance of electrical conductors.
  • Determine the appropriate size of conductors for a given current capacity.
  • Design and analyze electrical circuits.