Watts to kW Converter
Quick answer: To convert watts to kW, multiply by 0.001. For example, 10 W is 0.01 kW. One watt equals 0.001 kW.
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Use the Watts to kW Converter
Watts to kW formula and what each symbol means
kW = W × 0.001
| Symbol | Meaning |
|---|---|
| W | Watt |
| kW | Kilowatt |
Watts to kW examples
1 W
1 W × 0.001 = 0.001 kW.
10 W
10 W × 0.001 = 0.01 kW.
100 W
100 W × 0.001 = 0.1 kW.
Watts compared with kW
One kW is 1,000 times as large as one W, so your number gets smaller when you convert watts to kW and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About watts and kW
Watt (W): The SI unit of power, one joule per second. Kilowatt (kW): 1,000 watts.
Where watts to kW conversions are used
Appliances and chargers list their draw in watts, while air conditioners may quote BTU per hour. Power stations and the grid are described in megawatts and gigawatts.
How to calculate Watts to kW step by step
- Enter the value in W (the starting unit).
- Multiply by 0.001, because 1 W = 0.001 kW.
- The product is the value in kW. To go back, divide by 0.001 or multiply by 1,000.
Popular power conversions
How to read your Watts to kW result
One watt is one joule per second.
| WATTS | KW |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
kW to Watts: quick table
| KW | WATTS |
|---|---|
| 1 | 1,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
Common mistakes when calculating Watts to kW
- Mixing kW (power) with kWh (energy).
- Dividing when you should multiply: from W to kW multiply by 0.001; from kW to W divide by 0.001.
Watts to kW FAQ
How many kW are in 1 W?
1 W equals 0.001 kW.
How many W are in 1 kW?
1 kW equals 1,000 W.
Is 1 W = 0.001 kW an exact conversion?
The factor is shown rounded to 7 significant figures (0.001). The calculator above uses more digits.
What is a kilowatt (kW)?
1,000 watts.
How can I estimate watts to kW in my head?
One kW is 1,000 times as large as one W, so your number gets smaller when you convert watts to kW and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
What is 60 W in kW?
60 W = 0.06 kW (since 60 × 0.001).
What is 250 W in kW?
250 W = 0.25 kW (since 250 × 0.001).
What is 7 W in kW?
7 W = 0.007 kW (since 7 × 0.001).
How many decimals should I keep when converting W to kW?
Match the precision of your original measurement. For example, 0.01 kW rounds to 0.01 kW 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