Convert Ohm Metres to Ohm Square Millimetres per Metre
1 ohm metre (Ω·m) = 1000000 ohm square millimetres per metre (Ω·mm²/m). 1 Ω·mm²/m = 0.000001 Ω·m. Example: 15 Ω·m = 15 × 1000000 = 15000000 Ω·mm²/m.
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1 Ω·m = 1000000 Ω·mm²/m
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk ohm metre to ohm square millimetre per metre converter to paste a column from Excel.
How to Convert Ohm Metre to Ohm Square Millimetre per Metre
- 1 Ω·m = 1000000 Ω·mm²/m
- 1 Ω·mm²/m = 0.000001 Ω·m
- Example: convert 15 Ω·m to Ω·mm²/m: 15 Ω·m = 15 × 1000000 Ω·mm²/m = 15000000 Ω·mm²/m
Formula
Ω·mm²/m = Ω·m × 1000000
Derivation from SI units:
- The SI unit of electrical resistivity: resistance (Ω) × cross-section (m²) ÷ length (m)
- 1 Ω·mm²/m = 10⁻⁶ Ω·m (resistance in Ω of a 1 m wire with 1 mm² cross-section)
Both units are defined exactly, so the factor is exact. Ohm Metre definition: ohm metre; Ohm Square Millimetre per Metre definition: ohm square millimetre per metre.
Worked examples
- A reading of 1e-7 Ω·m converts to 0.1 Ω·mm²/m.
1e-7 Ω·m × 1000000 = 0.1 Ω·mm²/m - A value of 1 Ω·m is 1000000 Ω·mm²/m.
1 Ω·m × 1000000 = 1000000 Ω·mm²/m
Ohm Metre to Ohm Square Millimetre per Metre conversion table
| Ohm Metres (Ω·m) | Ohm Square Millimetres per Metre (Ω·mm²/m) |
|---|---|
| 1.59e-8 Ω·m | 0.0159 Ω·mm²/m |
| 1.72e-8 Ω·m | 0.0172 Ω·mm²/m |
| 2.65e-8 Ω·m | 0.0265 Ω·mm²/m |
| 1e-7 Ω·m | 0.1 Ω·mm²/m |
| 1e-6 Ω·m | 1 Ω·mm²/m |
| 0.001 Ω·m | 1000 Ω·mm²/m |
| 1 Ω·m | 1000000 Ω·mm²/m |
| 100 Ω·m | 100000000 Ω·mm²/m |
| 1000 Ω·m | 1000000000 Ω·mm²/m |
| 1e12 Ω·m | 1 × 10¹⁸ Ω·mm²/m |
Where it's used
Ohm Metres are used for conductor and alloy data sheets, while ohm square millimetres per metre appear in cable and wire resistance (R = ρ × length ÷ mm²). Both measure electrical resistivity, so the conversion is a fixed factor.
Ohm Metre to other electrical resistivity units
| Conversion | 1 Ω·m equals |
|---|---|
| ohm metre to ohm square millimetre per metre | 1000000 Ω·mm²/m |
| ohm metre to microohm centimetre | 100000000 µΩ·cm |
| ohm metre to ohm centimetre | 100 Ω·cm |
| ohm metre to megaohm centimetre | 0.0001 MΩ·cm |
| ohm metre to microohm metre | 1000000 µΩ·m |
| ohm metre to nanoohm metre | 1000000000 nΩ·m |
| ohm metre to ohm circular mil per foot | 601530493.6 Ω·cmil/ft |
| ohm metre to kiloohm centimetre | 0.1 kΩ·cm |
Frequently asked questions
How many ohm square millimetres per metre are in 1 ohm metre?
1 Ω·m = 1000000 Ω·mm²/m.
How do I convert ohm metres to ohm square millimetres per metre?
Multiply the value in Ω·m by 1000000. For example, 15 Ω·m × 1000000 = 15000000 Ω·mm²/m.
Is the Ω·m to Ω·mm²/m conversion exact?
Yes. Both units are defined exactly, and 1 Ω·m is exactly 1000000 Ω·mm²/m.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Ohm Metres to Ohm Square Millimetres per Metre. Retrieved October 25, 2026, from https://scientificconverters.com/electrical-resistivity/ohm-meters-to-ohm-square-millimeters-per-meter/
IEEE
Scientific Converters, "Convert Ohm Metres to Ohm Square Millimetres per Metre," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/electrical-resistivity/ohm-meters-to-ohm-square-millimeters-per-meter/