| circular mil | 1 circ mil | 2 circ mil | 3 circ mil | 4 circ mil | 5 circ mil | 6 circ mil | 7 circ mil | 8 circ mil | 9 circ mil | 10 circ mil | 11 circ mil | 12 circ mil | 13 circ mil | 14 circ mil | 15 circ mil | 16 circ mil | 17 circ mil | 18 circ mil | 19 circ mil | 20 circ mil | 21 circ mil | 22 circ mil | 23 circ mil | 24 circ mil | 25 circ mil | 26 circ mil | 27 circ mil | 28 circ mil | 29 circ mil | 30 circ mil | 31 circ mil | 32 circ mil | 33 circ mil | 34 circ mil | 35 circ mil | 36 circ mil | 37 circ mil | 38 circ mil | 39 circ mil | 40 circ mil | 41 circ mil | 42 circ mil | 43 circ mil | 44 circ mil | 45 circ mil | 46 circ mil | 47 circ mil | 48 circ mil | 49 circ mil | 50 circ mil | 51 circ mil | 52 circ mil | 53 circ mil | 54 circ mil | 55 circ mil | 56 circ mil | 57 circ mil | 58 circ mil | 59 circ mil | 60 circ mil | 61 circ mil | 62 circ mil | 63 circ mil | 64 circ mil | 65 circ mil | 66 circ mil | 67 circ mil | 68 circ mil | 69 circ mil | 70 circ mil | 71 circ mil | 72 circ mil | 73 circ mil | 74 circ mil | 75 circ mil | 76 circ mil | 77 circ mil | 78 circ mil | 79 circ mil | 80 circ mil | 81 circ mil | 82 circ mil | 83 circ mil | 84 circ mil | 85 circ mil | 86 circ mil | 87 circ mil | 88 circ mil | 89 circ mil | 90 circ mil | 91 circ mil | 92 circ mil | 93 circ mil | 94 circ mil | 95 circ mil | 96 circ mil | 97 circ mil | 98 circ mil | 99 circ mil | 100 circ mil |
| square centimeter | 5.067075 × 10-6 cm2 | 1.013415 × 10-5 cm2 | 1.5201225 × 10-5 cm2 | 2.02683 × 10-5 cm2 | 2.5335375 × 10-5 cm2 | 3.040245 × 10-5 cm2 | 3.5469525 × 10-5 cm2 | 4.05366 × 10-5 cm2 | 4.5603675 × 10-5 cm2 | 5.067075 × 10-5 cm2 | 5.5737825 × 10-5 cm2 | 6.08049 × 10-5 cm2 | 6.5871975 × 10-5 cm2 | 7.093905 × 10-5 cm2 | 7.6006125 × 10-5 cm2 | 8.10732 × 10-5 cm2 | 8.6140275 × 10-5 cm2 | 9.120735 × 10-5 cm2 | 9.6274425 × 10-5 cm2 | 0.0001013 cm2 | 0.0001064 cm2 | 0.0001115 cm2 | 0.0001165 cm2 | 0.0001216 cm2 | 0.0001267 cm2 | 0.0001317 cm2 | 0.0001368 cm2 | 0.0001419 cm2 | 0.0001469 cm2 | 0.0001520 cm2 | 0.0001571 cm2 | 0.0001621 cm2 | 0.0001672 cm2 | 0.0001723 cm2 | 0.0001773 cm2 | 0.0001824 cm2 | 0.0001875 cm2 | 0.0001925 cm2 | 0.0001976 cm2 | 0.0002027 cm2 | 0.0002078 cm2 | 0.0002128 cm2 | 0.0002179 cm2 | 0.0002230 cm2 | 0.0002280 cm2 | 0.0002331 cm2 | 0.0002382 cm2 | 0.0002432 cm2 | 0.0002483 cm2 | 0.0002534 cm2 | 0.0002584 cm2 | 0.0002635 cm2 | 0.0002686 cm2 | 0.0002736 cm2 | 0.0002787 cm2 | 0.0002838 cm2 | 0.0002888 cm2 | 0.0002939 cm2 | 0.0002990 cm2 | 0.0003040 cm2 | 0.0003091 cm2 | 0.0003142 cm2 | 0.0003192 cm2 | 0.0003243 cm2 | 0.0003294 cm2 | 0.0003344 cm2 | 0.0003395 cm2 | 0.0003446 cm2 | 0.0003496 cm2 | 0.0003547 cm2 | 0.0003598 cm2 | 0.0003648 cm2 | 0.0003699 cm2 | 0.0003750 cm2 | 0.0003800 cm2 | 0.0003851 cm2 | 0.0003902 cm2 | 0.0003952 cm2 | 0.0004003 cm2 | 0.0004054 cm2 | 0.0004104 cm2 | 0.0004155 cm2 | 0.0004206 cm2 | 0.0004256 cm2 | 0.0004307 cm2 | 0.0004358 cm2 | 0.0004408 cm2 | 0.0004459 cm2 | 0.0004510 cm2 | 0.0004560 cm2 | 0.0004611 cm2 | 0.0004662 cm2 | 0.0004712 cm2 | 0.0004763 cm2 | 0.0004814 cm2 | 0.0004864 cm2 | 0.0004915 cm2 | 0.0004966 cm2 | 0.0005016 cm2 | 0.0005067 cm2 |
A circular mil is a unit of area, equal to the area of a circle with a diameter of one mil (one thousandth of an inch). It corresponds to 5.067×10−4 mm². It is a unit intended for referring to the area of a wire with a circular cross section. As the area in circular mils can be calculated without reference to π, the unit makes conversion between cross section and diameter of a wire considerably easier.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| circular mil | circ mil | ≡ π⁄4 mil2 | ≈ 5.067075×10−10 m2 | Imperial/US |
| circular mils | square centimeters | circular mils | square centimeters |
|---|---|---|---|
| 1 | = 5.067075E-6 | 6 | = 3.040245E-5 |
| 2 | = 1.013415E-5 | 7 | = 3.5469525E-5 |
| 3 | = 1.5201225E-5 | 8 | = 4.05366E-5 |
| 4 | = 2.02683E-5 | 9 | = 4.5603675E-5 |
| 5 | = 2.5335375E-5 | 10 | = 5.067075E-5 |
Square centimetre (International spelling as used by the International Bureau of Weights and Measures) or square centimeter (American spelling), symbol cm2, is the SI unit of area or surface area.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| square centimeter | cm2 | ≡ 1 cm × 1 cm | = 10-4 m2 | Metric system SI |
| square centimeters | circular mils | square centimeters | circular mils |
|---|---|---|---|
| 1 | = 197352.51599789 | 6 | = 1184115.0959873 |
| 2 | = 394705.03199578 | 7 | = 1381467.6119852 |
| 3 | = 592057.54799366 | 8 | = 1578820.1279831 |
| 4 | = 789410.06399155 | 9 | = 1776172.643981 |
| 5 | = 986762.57998944 | 10 | = 1973525.1599789 |
| circular mils | square centimeters |
|---|---|
| 1 | = 5.067075 × 10-6 |
| 197,352.5159979 | = 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |