Last updated: June 06, 2025

Ohm (Ω) to Microohm (µΩ) Converter

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Ohms to Microohms (Ω to µΩ) Converter

This article will show how to convert electrical resistance measurement units from ohms (Ω) to microohms (µΩ). We will cover essential definitions, provide examples, share relevant formulas, and present tables, along with answers to common questions.

Definitions of Ohm and Microohm

Let’s get started by understanding the key definitions of Ohm (Ω) and Microohm (µΩ). Understanding these terms will allow you to perform conversions confidently.

What is Ohm?

The ohm (Ω) is the SI derived unit of electrical resistance. It is defined as the resistance between two points of a conductor when a constant potential difference of one volt is applied across those points, producing a current of one ampere in the conductor, assuming no additional electromotive force is present.[1]

What is Ohm? The definition and illustration
What is Ohm (Ω)?

According to SI prefixes[2], which are based on powers of 10, an ohm (1 Ω) is equivalent to one million microohms (106 µΩ or 1,000,000 µΩ).

Ohms to Microohms conversion scale
Ohms to microohms conversion scale

What is Microohm?

A microohm (µΩ) is a unit of electrical resistance in the SI system equal to one millionth (1/1,000,000) of an ohm (10-6 Ω).

What is Microohm (µΩ)?
What is Microohm (µΩ)?

It is vital for detecting hidden flaws in high-stakes systems like EV batteries, power grids, and industrial motors. Even a fraction of extra resistance here can cause overheating, energy waste, or catastrophic failures.

Ω to µΩ formula

Let’s take a closer look at the conversion formula so you can carry out these conversions independently, whether using a calculator or doing it manually with pencil and paper.

SI Prefixes and Values
SI multiples and submultiples

The micro- prefix in the International System of Units (SI) represents a multiplier of 10-6 (0.000001). So, to convert from ohms to microohms, multiply the number of ohms (R(Ω)) by 106 (1,000,000).

R(µΩ) = R(Ω) × 106 = R(Ω) × 1,000,000

$$\text{R}_\text{(µΩ)} = \text{R}_\text{(Ω)} \times 1{,}000{,}000$$

Or remember the Ω-to-µΩ conversion factor: 1 Ω = 1,000,000 µΩ

Ω to µΩ conversion table

The conversion table below provides a handy reference for converting electrical resistance measurement units from ohms (Ω) to microohms (µΩ). It covers a range from 0.1 Ω to 1,000 Ω, allowing for easy and quick conversions between these units of measurement.

Ohms (Ω)Microohms (µΩ)
0.1 Ω100,000 µΩ
0.5 Ω500,000 µΩ
1 Ω1,000,000 µΩ
2 Ω2,000,000 µΩ
4 Ω4,000,000 µΩ
5 Ω5,000,000 µΩ
10 Ω10,000,000 µΩ
20 Ω20,000,000 µΩ
30 Ω30,000,000 µΩ
40 Ω40,000,000 µΩ
50 Ω50,000,000 µΩ
60 Ω60,000,000 µΩ
70 Ω70,000,000 µΩ
80 Ω80,000,000 µΩ
90 Ω90,000,000 µΩ
100 Ω100,000,000 µΩ
200 Ω200,000,000 µΩ
500 Ω500,000,000 µΩ
800 Ω800,000,000 µΩ
1,000 Ω1,000,000,000 µΩ
Ohms to micro-ohms conversion table

Examples

Now, let's look at an example that illustrates the calculations required to convert from ohms to microohms (Ω to µΩ).

Example: Battery Internal Resistance Measurement

If a battery cell shows an internal resistance of 0.00012 Ω, what is its value in microohms? You need it for performance verification.

Solution

Since 1 ohm (Ω) = 106 = 1,000,000 microohms (µΩ), we can convert 0.00012 Ω to microohms by using the following formula:

$$\text{R}_\text{(µΩ)} = \text{R}_\text{(Ω)} \times 1{,}000{,}000$$
$$\text{R}_\text{(µΩ)} = 0.00012 \times 1{,}000{,}000 = \boxed{120 \text{ µΩ}}$$

Therefore, the 0.00012 Ω electrical resistance is equivalent to 120 µΩ.

To solve the problem with our calculator, follow the steps below:

  1. Enter the value in ohms: For this example, enter 0.00012 into the From box.
  2. View the result: The converter instantly calculates and displays the equivalent value in microohms: 120 µΩ.
Ohms to Microohms Converter Example
Steps to convert from ohms to microohms with our calculator

FAQs

Is 1 ohm or 1 microohm larger?

An ohm (Ω) is a million times bigger than a microohm (µΩ). Here are the relationships between the units:

  • 1 Ω = 106 = 1,000,000 µΩ
  • 1 µΩ = 10-6 = 1 ÷ 1,000,000 = 0.000001 Ω

How to convert from ohms to microhms?

To convert electrical resistance from ohms (Ω) to microohms (µΩ), follow these simple steps:

  • Write down the electrical resistance value in ohms (Ω).
  • Multiply it by the value of a Ω-to-µΩ conversion factor: 106 or 1,000,000.
  • The result of multiplication is the value of the electrical resistance in microohms (µΩ).

Why do I need to convert ohms to microohms?

Converting ohms to microohms is essential when dealing with extremely low resistance values, such as those found in precision instruments or superconducting materials. This conversion transforms unwieldy decimals into more manageable whole numbers, making measurements easier to compare and analyze.

You now know how to convert electrical resistance from ohms (Ω) to microohms (µΩ). You can quickly use our calculator to convert between the electric resistance measurement units to save time for future calculations.

Ohm (Ω) to Microohm (µΩ) Converter

About this app

Ohm (Ω) to Microohm (µΩ) Converter

Our ohms to micro-ohms (Ω to µΩ) converter is a simple web app for converting electrical resistance measurement units between ohms (Ω) and microohms (µΩ), with explanations, formulas, examples, and tables.

Availability

You can use the calculator for free as a PWA web app online or install it locally on any modern operating system, including Android, iOS, Windows 11/10, and macOS.

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References

2 Sources

  1. ⬆️ Wikipedia contributors. (2025, May 25). Ohm.

    https://en.wikipedia.org/w/index.php?title=Ohm&oldid=1292104943
  2. ⬆️ Metric (SI) Prefixes | NIST. (2010, January 13). NIST.

    https://www.nist.gov/pml/owm/metric-si-prefixes