Ohms to Milliohms Converter

ConversionEdited by Hemant Kumar and Anjita Rai, founders · How we checkUpdated Free · No sign-up

Quick answer: To convert ohms to milliohms, multiply by 1,000. For example, 10 Ω is 10,000 mΩ. One ohm equals 1,000 mΩ.

Use the Ohms to Milliohms Converter

Ohms to Milliohms formula and what each symbol means

mΩ = Ω × 1,000

Symbols used in the formula
SymbolMeaning
ΩOhm
mΩMilliohm

Ohms to Milliohms examples

1 Ω

1 Ω × 1,000 = 1,000 mΩ.

10 Ω

10 Ω × 1,000 = 10,000 mΩ.

100 Ω

100 Ω × 1,000 = 100,000 mΩ.

Ohms compared with Milliohms

One Ω is 1,000 times as large as one mΩ, so your number gets bigger when you convert ohms to milliohms and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.

About ohms and milliohms

Ohm (Ω): The ohm, the SI unit of electrical resistance. Milliohm (mΩ): Milliohm, 0.001 Ω.

How to calculate Ohms to Milliohms step by step

  1. Enter the value in Ω (the starting unit).
  2. Multiply by 1,000, because 1 Ω = 1,000 mΩ.
  3. The product is the value in mΩ. To go back, divide by 1,000 or multiply by 0.001.

Popular electric resistance conversions

How to read your Ohms to Milliohms result

By Ohm’s law, one ohm is one volt per ampere.

OHMSMILLIOHMS
11,000
22,000
55,000
1010,000
2020,000
5050,000
100100,000
1,0001,000,000

Milliohms to Ohms: quick table

MILLIOHMSOHMS
10.001
50.005
100.01
250.025
500.05
1000.1
2500.25
5000.5

Common mistakes when calculating Ohms to Milliohms

  • Confusing resistance (Ω) with resistivity (Ω·m).
  • Dividing when you should multiply: from Ω to mΩ multiply by 1,000; from mΩ to Ω divide by 1,000.

Ohms to Milliohms FAQ

How many mΩ are in 1 Ω?

1 Ω equals 1,000 mΩ.

How many Ω are in 1 mΩ?

1 mΩ equals 0.001 Ω.

Is 1 Ω = 1,000 mΩ an exact conversion?

The factor is shown rounded to 7 significant figures (1,000). The calculator above uses more digits.

What is an ohm (Ω)?

The ohm, the SI unit of electrical resistance.

How can I estimate ohms to milliohms in my head?

One Ω is 1,000 times as large as one mΩ, so your number gets bigger when you convert ohms to milliohms and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.

What is 500 Ω in milliohms?

500 Ω = 500,000 mΩ (since 500 × 1,000).

What is 15 Ω in milliohms?

15 Ω = 15,000 mΩ (since 15 × 1,000).

What is 75 Ω in milliohms?

75 Ω = 75,000 mΩ (since 75 × 1,000).

How many decimals should I keep when converting Ω to mΩ?

Match the precision of your original measurement. For example, 10,000 mΩ rounds to 10,000 mΩ at 3 significant figures; keep more digits only for engineering or scientific work.

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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)