Convert Ohm circular mil per foot to Milliohm-metres
Convert Ohm circular mil per foot (Ω·cmil/ft) to Milliohm-metres (mΩ·m) instantly and accurately.
Conversion Formula
mΩ·m = Ω·cmil/ft × 1.662426113e-6
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 Milliohm-metres
The milliohm-metre (mΩ·m) equals 10⁻³ Ω·m, the scale for highly resistive alloys, graphite, and transition-metal oxides. Carbon-graphite brushes used in DC motors have resistivity of 20-100 mΩ·m; ferrites used in power magnetics are 0.1-10 mΩ·m; polyaniline conducting polymer films are in the mΩ·m range when fully protonated. 1 mΩ·m = 10⁻³ Ω·m = 10 Ω·cm.
Quick Reference Table
| Ohm circular mil per foot (Ω·cmil/ft) | Milliohm-metres (mΩ·m) |
|---|---|
| 1 Ω·cmil/ft | 1.662 × 10-6 mΩ·m |
| 2 Ω·cmil/ft | 3.325 × 10-6 mΩ·m |
| 5 Ω·cmil/ft | 8.312 × 10-6 mΩ·m |
| 10 Ω·cmil/ft | 1.662 × 10-5 mΩ·m |
| 25 Ω·cmil/ft | 4.156 × 10-5 mΩ·m |
| 50 Ω·cmil/ft | 8.312 × 10-5 mΩ·m |
| 100 Ω·cmil/ft | 0.000166243 mΩ·m |