The ohm (Ω) is the SI unit of electrical resistance, describing how strongly a material opposes current flow.
Ohms to Milliohms
Convert Ohm (Ω) to Milliohm (mΩ) instantly with an exact formula, conversion table, and FAQ.
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Convert ohms (Ω) to milliohms (mΩ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A Milliohm (mΩ) equals 1/1,000 ohm(s), a scaled unit of electrical resistance used for milli-scale electrical work.
mΩ = Ω × 1000
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Formula
mΩ = Ω × 1000
Ω = mΩ × 0.001
Conversion table
| 1 Ω | 1000 mΩ |
| 5 Ω | 5000 mΩ |
| 10 Ω | 10000 mΩ |
| 20 Ω | 20000 mΩ |
| 50 Ω | 50000 mΩ |
| 100 Ω | 100000 mΩ |
| 500 Ω | 500000 mΩ |
| 1000 Ω | 1.000000e+06 mΩ |
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How the formula works
Both ohm and milliohm measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in ohms by 1000 to get milliohms. To reverse the conversion, multiply a milliohm value by 0.001 to get back to ohms.
Frequently asked questions
What is Ohm (Ω)?
The ohm (Ω) is the SI unit of electrical resistance, describing how strongly a material opposes current flow.
What is Milliohm (mΩ)?
A Milliohm (mΩ) equals 1/1,000 ohm(s), a scaled unit of electrical resistance used for milli-scale electrical work.
How do I convert ohms to milliohms?
Multiply the ohm value by 1000 to get the equivalent in milliohms. For example, 5 Ω × 1000 = 5000 mΩ.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1000 is an exact, non-rounded value.
Can I convert milliohms back to ohms?
Yes. Divide the milliohm value by 1000, or multiply it by 0.001, to get ohms.
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About converting ohms to milliohms
The ohm (Ω) is the SI unit of electrical resistance, describing how strongly a material opposes current flow. A Milliohm (mΩ) equals 1/1,000 ohm(s), a scaled unit of electrical resistance used for milli-scale electrical work.
Use this calculator to move between ohms and milliohms accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.