Use this free online conversion calculator to swiftly and accurately convert:

- Mils to cmils
- Mils to inches (in)
- Mils to mm

The calculator is based on the following formulas:

**Converting Mils to Circular Mils (cmils) and Inches:**- 1 cmil = (length in mils)²
- 1 inch (in) = 1,000 mils

**Converting Mils to mm:**- (Length in mils) x 0.0254

**Worked Example:**

Suppose the diameter of a wire is 240 mils (0.24 inches). The area of the wire based on its diameter in circular mils is calculated as follows:

- Area = (diameter of the wire in mils)² = 240² = 57,600 cmils or 57.6 kcmils.

In summary:

- 240 mils = 0.24 inches = 57,600 cmils = 57.6 kcmils.

**Online Calculator: Convert Mils to cmils, Inches, and mm**

Use the free online conversion calculator to quickly and accurately convert:

- mils to cmils
- mils to inches (in)
- mils to mm

The online calculator is based on the formula below.

### Formula for converting mils to circular mils (cmils), inches and mm

This mils calculator above is based on the following conversions:

- For mils to cmils, 1 cmil = (length in mils)² .
- 1 inch (in) = 1,000 mils
- For mils to inches, 1,000 mils = 1 inch
- For mils to mm, (length in mils) x 0.0254

**Worked example**

*For example, if the diameter of a wire is 240 mils (0.24 inches), then the area of the wire based on its diameter in circular mils is (diameter of the wire in mils)² = 240² = 57,600 cmils or 57.6 kcmils.*

i.e. 240 mils = 0.24 inches =57,600 cmils =57.6 kcmils

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