Convert Circular Mils to Ares
Convert Circular Mils (cmil) to Ares (a) instantly and accurately.
Conversion Formula
a = cmil × 5.067074791e-12
About Circular Mils
A circular mil (cmil) is a unit used in electrical engineering to specify the cross-sectional area of round wires and cables. Equal to the area of a circle with a diameter of exactly one thou (one thousandth of an inch) - approximately 5.067 × 10⁻¹⁰ m² - it simplifies wire calculations: the cross-sectional area in cmil equals the wire diameter in mils, squared. US electrical codes (NEC/NEMA) specify conductor sizes in circular mils, and large cables are rated in thousands of circular mils (kcmil or MCM). A 12 AWG wire, common in US household wiring, has a cross-section of 6,530 cmil.
About Ares
An are (a) is a metric unit of area equal to 100 square meters (10 m × 10 m). Though less commonly used today, it served as an intermediate unit between square meters and hectares in the metric system. One are equals 0.01 hectares or about 119.6 yd². It is still occasionally used in some European countries for measuring medium-sized land plots, gardens, and vineyards. The dekameter-squared (dam²) is another name for the same unit.
Quick Reference Table
| Circular Mils (cmil) | Ares (a) |
|---|---|
| 1 cmil | 5.067 × 10-12 a |
| 2 cmil | 1.013 × 10-11 a |
| 5 cmil | 2.534 × 10-11 a |
| 10 cmil | 5.067 × 10-11 a |
| 25 cmil | 1.267 × 10-10 a |
| 50 cmil | 2.534 × 10-10 a |
| 100 cmil | 5.067 × 10-10 a |