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Ohm to Milliohm Converter

1 ohm is exactly 1000 milliohms. Convert ohms (Ω) to milliohms (mΩ) below: type a value and the result updates as you type.

Ω to mΩ calculator

Dot or comma decimals and scientific notation (1e-3) work.

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Result

Ohm to Milliohm conversion

1 Ω = 1000 mΩone ohm in milliohms

1 mΩ = 0.001 Ωone milliohm in ohms

Ohm (Ω): SI unit of electric resistance: one volt per ampere.

Milliohm (mΩ): One thousandth of an ohm. Used for batteries, cables and shunts.

Source:SI Brochure, 9th edition (BIPM, 2019)

How to convert ohms to milliohms

To convert ohms to milliohms, multiply the number of ohms by 1000.

Formula

mΩ = Ω × 1000

Examples

  • 5 Ω = 5 × 1000 = 5000 mΩ
  • 25 Ω = 25 × 1000 = 25000 mΩ
  • 100 Ω = 100 × 1000 = 100000 mΩ

Ohm to Milliohm conversion table

Ohm to Milliohm
Ohm (Ω)Milliohm (mΩ)
0.1 Ω100 mΩ
0.5 Ω500 mΩ
1 Ω1000 mΩ
2 Ω2000 mΩ
3 Ω3000 mΩ
5 Ω5000 mΩ
10 Ω10000 mΩ
20 Ω20000 mΩ
25 Ω25000 mΩ
50 Ω50000 mΩ
100 Ω100000 mΩ
250 Ω250000 mΩ
500 Ω500000 mΩ
1000 Ω1000000 mΩ

Values rounded to 10 significant digits where needed.

Frequently asked questions

How many milliohms are in one ohm?
One ohm is exactly 1000 milliohms.
How do I convert milliohms to ohms?
To convert milliohms to ohms, multiply the number of milliohms by 0.001. The formula is Ω = mΩ × 0.001.
Is this conversion exact?
Yes. Both units have exact definitions and the factor 1000 is exact. Displayed results are only rounded when they have many decimal places.
Which is larger, a ohm or a milliohm?
A ohm is 1000 times larger than a milliohm. In other words, a milliohm is exactly 1/1000 of a ohm.