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]
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).
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).
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.
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
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 Ω | 100,000 µΩ |
| 0.5 Ω | 500,000 µΩ |
| 1 Ω | 1,000,000 µΩ |
| 2 Ω | 2,000,000 µΩ |
| 4 Ω | 4,000,000 µΩ |
| 5 Ω | 5,000,000 µΩ |
| 10 Ω | 10,000,000 µΩ |
| 20 Ω | 20,000,000 µΩ |
| 30 Ω | 30,000,000 µΩ |
| 40 Ω | 40,000,000 µΩ |
| 50 Ω | 50,000,000 µΩ |
| 60 Ω | 60,000,000 µΩ |
| 70 Ω | 70,000,000 µΩ |
| 80 Ω | 80,000,000 µΩ |
| 90 Ω | 90,000,000 µΩ |
| 100 Ω | 100,000,000 µΩ |
| 200 Ω | 200,000,000 µΩ |
| 500 Ω | 500,000,000 µΩ |
| 800 Ω | 800,000,000 µΩ |
| 1,000 Ω | 1,000,000,000 µΩ |
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:
Therefore, the 0.00012 Ω electrical resistance is equivalent to 120 µΩ.
To solve the problem with our calculator, follow the steps below:
- Enter the value in ohms: For this example, enter
0.00012into the From box. - View the result: The converter instantly calculates and displays the equivalent value in microohms:
120 µΩ.
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 µΩ1 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-µΩconversion factor:106or1,000,000. - 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.
