You can use the calculator below to convert kcmil or MCM to mm², inches, and mm.
*The information provided by the calculator is a guide. Always consult a qualified professional for your project.
Formula to Convert kcmil to MCM
Both kcmil and MCM represent: “thousands of circular mils.” Therefore, 1 kcmil = 1 MCM (older abbreviation) = 1,000 mils.
Using this conversion, 500 kcmil = 500 MCM.
How to Convert MCM to kcmil
To complete the conversion from MCM to kcmil, simply change the units while keeping the value constant.
For example, 500 MCM = 500 kcmil.
You may choose to refer to the table below instead of using the calculator above or the formulas provided to obtain the equivalent diameters (solid, non-stranded rod) in inches and mm based on kcmil/MCM values.
Table: kcmil/MCM to Inches and mm
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 |
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