Electrical Resistivity Converter
Convert between ohm-meters, ohm-centimeters, microhm-centimeters, ohm-circular mils per foot and other units of electrical resistivity.
1 ohm-meter = 100 ohm-centimeters
Most used resistivity units
- Ohm-meter Ω⋅m Base unit
- Ohm-centimeter Ω⋅cm 1 Ω⋅cm = 0.01 Ω⋅m
- Microhm-centimeter µΩ⋅cm 1 µΩ⋅cm = 1 × 10-8 Ω⋅m
- Ohm square millimeter per meter Ω⋅mm²/m 1 Ω⋅mm²/m = 0.000001 Ω⋅m
- Ohm circular mil per foot Ω⋅cmil/ft 1 Ω⋅cmil/ft = 1.6624261 × 10-9 Ω⋅m
- Microhm-meter µΩ⋅m 1 µΩ⋅m = 0.000001 Ω⋅m
- Ohm-inch Ω⋅in 1 Ω⋅in = 0.0254 Ω⋅m
Popular resistivity conversions
- Ohm-meters to ohm-centimeters 1 Ω⋅m = 100 Ω⋅cm
- Microhm-centimeters to ohm-meters 1 µΩ⋅cm = 1 × 10-8 Ω⋅m
- Ohm square millimeters per meter to ohm-meters 1 Ω⋅mm²/m = 0.000001 Ω⋅m
What is resistivity?
Electrical resistivity is a property of a material: how strongly it resists current, independent of the shape of the conductor. A wire's resistance equals resistivity × length ÷ cross-sectional area. The SI unit is the ohm-meter; electrical engineers often use Ω·mm²/m, and US wire tables use ohm-circular mils per foot.
Resistivity units from smallest to largest
Every proportional resistivity unit on the site, ordered by size and expressed in ohm-meters.
- Ohm circular mil per foot 1.662426 × 10-9 Ω⋅m
- Microhm-centimeter 1 × 10-8 Ω⋅m
- Ohm square millimeter per meter 0.000001 Ω⋅m
- Microhm-meter 0.000001 Ω⋅m
- Ohm-centimeter 0.01 Ω⋅m
- Ohm-inch 0.0254 Ω⋅m
- Ohm-meter 1 Ω⋅m
All 7 resistivity units
Units
Frequently asked questions
What is the resistivity of copper?
About 1.68 × 10⁻⁸ Ω·m (1.68 µΩ·cm, 0.0168 Ω·mm²/m) at 20 °C.