To convert kcmil to mm² or vice versa, simply use our calculator below.
Note: 1 kcmil = 1,000 mil.
Worked Examples Using the Calculator:
Using the calculator above:
- 500 kcmil = 253.35 mm2
- 350 kcmil = 177.34 mm2
- 250 kcmil = 126.68 mm2
Table Showing kcmil values with their equivalent cross-sectional areas in mm2 (for solid, non-stranded rods).
You can also use the table below to convert various kcmil values to their equivalent cross-sectional areas in mm²
| kcmil/MCM | (mm2)/sq.mm | Diameter (inches) | Diameter (mm) |
| 1 | 0.5 | 0.798 | 0.031 |
| 5 | 2.5 | 1.785 | 0.070 |
| 10 | 5.0 | 2.524 | 0.099 |
| 50 | 25.3 | 5.677 | 0.224 |
| 100 | 50.7 | 8.037 | 0.316 |
| 150 | 76.0 | 9.839 | 0.387 |
| 200 | 101.3 | 11.360 | 0.447 |
| 250 | 126.7 | 0.500 | 12.70 |
| 300 | 152.0 | 0.548 | 13.91 |
| 350 | 177.3 | 0.592 | 15.03 |
| 400 | 202.7 | 0.632 | 16.06 |
| 500 | 253.4 | 0.707 | 17.96 |
| 600 | 304.0 | 0.775 | 19.67 |
| 700 | 354.7 | 0.837 | 21.25 |
| 750 | 380.0 | 0.866 | 22.00 |
| 800 | 405.4 | 0.894 | 22.72 |
| 900 | 456.0 | 0.949 | 24.10 |
| 1,000 | 506.7 | 1.000 | 25.40 |
| 1,250 | 633.4 | 1.118 | 28.40 |
| 1,500 | 760.1 | 1.225 | 31.11 |
| 1,750 | 886.7 | 1.323 | 33.60 |
| 2,000 | 1013.4 | 1.414 | 35.92 |
Note: 1 kcmil is the same as 1 MCM. MCM is the older unit.
What if you Need to Convert mm2 to kcmil?
You can use the conversion factor, 1 mm2 = 1.97 kcmil
Using the conversion, 1 mm2 = 1.97 kcmil
- 300 mm2 = 591 kcmil, from (300mm2 x1.97)
- 500 mm2 = 985 kcmil, from (500mm2 x1.97)
- 185 mm2 = 365.10 kcmil, from (185mm2 x 1000)/506.7
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