Convert Ohm circular mil per foot to Microohm-centimetres
Convert Ohm circular mil per foot (Ω·cmil/ft) to Microohm-centimetres (µΩ·cm) instantly and accurately.
Conversion Formula
µΩ·cm = Ω·cmil/ft × 0.1662426113
About Ohm circular mil per foot
The ohm circular mil per foot (Ω·cmil/ft) is the US customary resistivity unit for wires and cables, equal to π×6.4516×10⁻¹⁰/(4×0.3048) Ω·m ≈ 1.66243×10⁻⁹ Ω·m. Copper has resistivity ≈1.012 Ω·cmil/ft; wire tables in NFPA 70 (NEC) and ASTM B3 list conductor resistivity in this unit. 1 Ω·cmil/ft ≈ 1.66243 nΩ·m.
About Microohm-centimetres
The microohm-centimetre (µΩ·cm) equals 10⁻⁸ Ω·m = 10 nΩ·m, the traditional unit for bulk metal resistivity in materials science. Copper is 1.68 µΩ·cm; tungsten 5.6 µΩ·cm; platinum 10.6 µΩ·cm; CRC Handbook tables still list metal resistivities in µΩ·cm. 1 µΩ·cm = 10⁻⁸ Ω·m = 10 nΩ·m.
Quick Reference Table
| Ohm circular mil per foot (Ω·cmil/ft) | Microohm-centimetres (µΩ·cm) |
|---|---|
| 1 Ω·cmil/ft | 0.166243 µΩ·cm |
| 2 Ω·cmil/ft | 0.332485 µΩ·cm |
| 5 Ω·cmil/ft | 0.831213 µΩ·cm |
| 10 Ω·cmil/ft | 1.66243 µΩ·cm |
| 25 Ω·cmil/ft | 4.15607 µΩ·cm |
| 50 Ω·cmil/ft | 8.31213 µΩ·cm |
| 100 Ω·cmil/ft | 16.6243 µΩ·cm |