One kilohm is exactly 1,000,000,000 microhms, so converting kilohms to microhms is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
Kilohms are the everyday scale of signal electronics — pull-ups, dividers and bias networks are nearly all in kΩ. One micro ohm is one millionth of a ohm (1e-6 ohms).
Below the calculator there is a step table for the values people look up most, and a second table putting real how strongly a component opposes current figures into microhms so the number you get has something to be compared against.
The formula
kilohms- The amount you are converting, in kilohms
1,000,000,000- The exact number of microhms in one kilohm
microhms- The converted result
How it works, step by step
- Enter the value in kilohms.
- It is multiplied by 1,000,000,000, the exact factor between the two units.
- The answer is shown in microhms, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
Common pull-up resistor: 10 kΩ in microhms
Take common pull-up resistor, roughly 10 kΩ. The conversion is a single multiplication — 10 × 1e+09 — giving 1e+10 µΩ. Because the relationship is proportional, doubling the input doubles the answer to 2e+10 µΩ.
Typical LED series resistor: 0.22 kΩ in microhms
Typical LED series resistor comes to about 0.22 kΩ. Multiplying by the factor: 0.22 × 1e+09 = 2.2e+08 µΩ. Dividing the answer back by 1e+09 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
How to read your score
Frequently asked questions
How many microhms are in one kilohm?
Exactly 1,000,000,000. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert kilohms to microhms?
microhms = kilohms × 1,000,000,000. Reversed, kilohms = microhms ÷ 1,000,000,000, which is the same as multiplying by 1e-09.
Which is the bigger unit, the kilohm or the microhm?
The kilohm. One kilohm equals 1e+09 microhms.
What does this quantity actually measure?
Both units measure how strongly a component opposes current. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a kilohm?
Kilohms are the everyday scale of signal electronics — pull-ups, dividers and bias networks are nearly all in kΩ.
What is a microhm?
One micro ohm is one millionth of a ohm (1e-6 ohms).
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Kilohms to microhms reference tables
| Kilohms | Microhms |
|---|---|
| 0.5 kΩ | 5e+08 µΩ |
| 1 kΩ | 1e+09 µΩ |
| 2 kΩ | 2e+09 µΩ |
| 3 kΩ | 3e+09 µΩ |
| 5 kΩ | 5e+09 µΩ |
| 10 kΩ | 1e+10 µΩ |
| 20 kΩ | 2e+10 µΩ |
| 25 kΩ | 2.5e+10 µΩ |
| 50 kΩ | 5e+10 µΩ |
| 75 kΩ | 7.5e+10 µΩ |
| 100 kΩ | 1e+11 µΩ |
| 250 kΩ | 2.5e+11 µΩ |
| 500 kΩ | 5e+11 µΩ |
| 1000 kΩ | 1e+12 µΩ |
| 5000 kΩ | 5e+12 µΩ |
Exact factor: 1 kilohm = 1,000,000,000 microhms.
| Quantity | kΩ | µΩ |
|---|---|---|
| Typical LED series resistor | 0.22 kΩ | 2.2e+08 µΩ |
| Common pull-up resistor | 10 kΩ | 1e+10 µΩ |
| Multimeter input impedance | 1e+04 kΩ | 1e+13 µΩ |
| Copper wire, 1 m of 1.5 mm2 | 1.21e-05 kΩ | 1.21e+04 µΩ |
| Human skin, dry | 100 kΩ | 1e+11 µΩ |
| Heating element, 2 kW at 230 V | 0.02645 kΩ | 2.645e+07 µΩ |
Published reference values, converted with the same factor this page uses.