Ohms to kilohms
Type a value in ohms to see it in kilohms straight away, or type in the second box to convert back.
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How to use it
- Type the value in the ohms box.
- Read the result in kilohms as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
kΩ = Ω × 0.001
Multiply the value in ohms by 0.001 to get kilohms.
Example
To convert 25 Ω to kilohms: 25 × 0.001 = 0.025 kΩ.
Conversion table
| Ohms (Ω) | Kilohms (kΩ) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1,000 | 1 |
About the units
- Ohm
- The SI unit of resistance: a conductor that carries one ampere under one volt has one ohm, so 1 Ω = 1 V/A.
- Kilohm
- A kilohm is exactly 1000 ohms, the most common range on electronic resistors such as 4.7 kΩ and 10 kΩ.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many kilohms are in one ohm?
1 Ω = 0.001 kΩ exactly.
How do I convert ohms to kilohms?
Use kΩ = Ω × 0.001. For example, 25 Ω = 0.025 kΩ.
How many ohms are in one kilohm?
1 kΩ = 1,000 Ω.
What does the k in a resistor value mean?
It means kilo, or 1000, so a 4.7k resistor is 4700 ohms. Schematics sometimes write the same value as 4K7.
How do I work out resistance from voltage and current?
Use Ohm's law: resistance equals voltage divided by current. 12 V with 0.5 A means 24 ohms.