Electric Resistivity Converter
Quick answer: Choose a starting unit and a target unit, then enter a value. Common conversions: 1 Ω·m = 100 Ω·cm; 1 Ω·m = 1,000,000 Ω·mm²/m; 1 Ω·m = 100,000,000 µΩ·cm. This converter covers 7 electric resistivity units.
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Use the Electric Resistivity Converter
Electric Resistivity formula and what each symbol means
target = value × (factor of starting unit ÷ factor of target unit), where each factor is the unit value in Ω·m.
| Symbol | Meaning |
|---|---|
| value | The number you want to convert |
| factor | The unit’s size expressed in the base unit (Ω·m) |
Electric Resistivity examples
Ω·m to Ω·cm
10 Ω·m = 1,000 Ω·cm.
Ω·m to Ω·mm²/m
10 Ω·m = 10,000,000 Ω·mm²/m.
Ω·m to µΩ·cm
10 Ω·m = 1,000,000,000 µΩ·cm.
How to calculate Electric Resistivity step by step
- Choose the starting unit and the target unit.
- Enter your value.
- Read the converted value, plus the conversion factor in both directions.
Popular electric resistivity conversions
- Ohm meters to Ohm centimeters converter
- Ohm meters to Ohm square millimeters per meter converter
- Ohm meters to Microohm centimeters converter
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- Ohm centimeters to Microohm centimeters converter
- Ohm square millimeters per meter to Ohm meters converter
- Ohm square millimeters per meter to Ohm centimeters converter
- Ohm square millimeters per meter to Microohm centimeters converter
- Microohm centimeters to Ohm meters converter
- Microohm centimeters to Ohm centimeters converter
- Microohm centimeters to Ohm square millimeters per meter converter
How to read your Electric Resistivity result
Resistivity is a material property that gives resistance from shape. The SI unit is ohm metre. Copper is about 1.7 µΩ·cm, which is 1.7×10⁻⁸ Ω·m; 1 Ω·mm²/m equals 1 µΩ·m (10⁻⁶ Ω·m).
| UNIT | SYMBOL | EQUALS | VALUE OF 1 Ω·M |
|---|---|---|---|
| Ohm meter | Ω·m | 1 Ω·m = 1 Ω·m | 1 Ω·m |
| Ohm centimeter | Ω·cm | 1 Ω·cm = 0.01 Ω·m | 100 Ω·cm |
| Ohm square millimeter per meter | Ω·mm²/m | 1 Ω·mm²/m = 0.000001 Ω·m | 1,000,000 Ω·mm²/m |
| Microohm centimeter | µΩ·cm | 1 µΩ·cm = 1×10⁻⁸ Ω·m | 100,000,000 µΩ·cm |
| Ohm inch | Ω·in | 1 Ω·in = 0.0254 Ω·m | 39.37008 Ω·in |
| Ohm circular mil per foot | Ω·cmil/ft | 1 Ω·cmil/ft = 1.6624261×10⁻⁹ Ω·m | 601,530,500 Ω·cmil/ft |
| Kiloohm meter | kΩ·m | 1 kΩ·m = 1,000 Ω·m | 0.001 kΩ·m |
Common mistakes when calculating Electric Resistivity
- Confusing resistivity (Ω·m) with resistance (Ω).
- Mixing Ω·cm and Ω·m, which differ by 100.
- Forgetting that Ω·mm²/m is used for wire data and equals 10⁻⁶ Ω·m.
Electric Resistivity FAQ
How many Ω·m is 1 Ω·cm?
1 Ω·cm is 0.01 Ω·m.
How many Ω·m is 1 Ω·mm²/m?
1 Ω·mm²/m is exactly 1×10⁻⁶ Ω·m.
How do I get wire resistance from resistivity?
R = ρ × length ÷ cross-sectional area.
What is the base unit for electric resistivity?
This converter uses ohm meter (Ω·m) as the common base unit: every value is first converted to it and then to the target unit.
How do I convert between two electric resistivity units?
Choose the starting and target units, enter the value and read the result. By hand: convert to the base unit with the table, then divide by the target unit factor.
How many ohm centimeters are in 1 ohm meter?
1 Ω·m = 100 Ω·cm.
How many ohm square millimeters per meter are in 1 ohm meter?
1 Ω·m = 1,000,000 Ω·mm²/m.
How many microohm centimeters are in 1 ohm meter?
1 Ω·m = 100,000,000 µΩ·cm.
Which electric resistivity units does this converter support?
It covers 7 units: ohm meter (Ω·m), ohm centimeter (Ω·cm), ohm square millimeter per meter (Ω·mm²/m), microohm centimeter (µΩ·cm), ohm inch (Ω·in), ohm circular mil per foot (Ω·cmil/ft), kiloohm meter (kΩ·m).
How accurate is the electric resistivity converter?
Results are calculated at full double precision and shown to about 8 significant figures. Round the answer to the precision of your original measurement; a result cannot be more accurate than the number you started with.
More in Electric Resistivity converters
- Microohm centimeters to Ohm centimeters Converter
- Ohm square millimeters per meter to Ohm meters Converter
- Microohm centimeters to Ohm meters Converter
- Ohm square millimeters per meter to Ohm centimeters Converter
- Microohm centimeters to Ohm square millimeters per meter Converter
- Ohm square millimeters per meter to Microohm centimeters Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the International System of Units (SI)