About this converter
Electric resistivity measures how strongly a material opposes electric current. Ohm meter (Ω·m) is the SI unit, 1 Ω·m equals 100 Ω·cm, and 1 Ω·m equals 1,000,000 µΩ·m.
This converter supports SI, centimeter, inch, micro-ohm, CGS, and circular-mil wire resistivity units. Electrical engineers, cable designers, semiconductor researchers, materials scientists, and test-lab technicians use these conversions when comparing conductor tables, insulation data, and wire specifications.
How to Use This Converter
- Enter the resistivity value.
- Select the source unit from the From menu.
- Select the target unit from the To menu.
- Read the converted result and formula line.
- Use Swap to reverse the selected units.
Units Covered
| Unit | Symbol | Common Use |
|---|---|---|
| Ohm meter | Ω·m | SI material resistivity and physics calculations. |
| Ohm centimeter | Ω·cm | Semiconductor and materials property tables. |
| Ohm inch | Ω·in | US inch-based material references. |
| Microhm centimeter | µΩ·cm | Metals, conductors, and low-resistivity materials. |
| Microhm meter | µΩ·m | Low-resistivity SI-scale conductor data. |
| Microhm inch | µΩ·in | Wire and conductor references in inch-based systems. |
| Abohm centimeter | abΩ·cm | CGS electromagnetic resistivity references. |
| Statohm centimeter | statΩ·cm | CGS electrostatic resistivity references. |
| Circular mil ohm per foot | circular mil Ω/ft | Wire and cable resistivity specifications. |
Ω·m to Ω·cm Conversion Table
| From | To |
|---|---|
| 0.000001 Ω·m | 0.0001 Ω·cm |
| 0.00001 Ω·m | 0.001 Ω·cm |
| 0.0001 Ω·m | 0.01 Ω·cm |
| 0.001 Ω·m | 0.1 Ω·cm |
| 0.01 Ω·m | 1 Ω·cm |
| 0.1 Ω·m | 10 Ω·cm |
| 1 Ω·m | 100 Ω·cm |
| 10 Ω·m | 1,000 Ω·cm |
| 100 Ω·m | 10,000 Ω·cm |
| 1,000 Ω·m | 100,000 Ω·cm |
How to Convert Ω·m to Ω·cm
Ohm meters to ohm centimeters
For example, 0.025 Ω·m x 100 = 2.5 Ω·cm.
Ohm centimeters to ohm meters
For example, 350 Ω·cm / 100 = 3.5 Ω·m.
When You Need to Convert Electric Resistivity
Semiconductor data sheets often use Ω·cm, while SI calculations use Ω·m. A silicon sample listed at 10 Ω·cm has resistivity of 0.1 Ω·m.
Metals are often reported in µΩ·cm because their resistivity is very small. Copper near 1.68 µΩ·cm equals 1.68e-8 Ω·m.
Wire and cable references may use circular mil ohm per foot. Converting those values to Ω·m helps compare North American wire tables with SI material data.