Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Convert Watts to Kilowatts instantly with an exact, accurate formula -- no sign-up, no ads blocking the result.
This tool converts a power measurement in Watts into its exact equivalent in Kilowatts, using the fixed factor 0.001. Power unit conversions matter for electrical appliances, HVAC equipment sizing, and generators -- watts and kilowatts are the standard electrical power units on appliance labels and utility bills, while BTU/hr is the traditional US unit for heating and cooling equipment capacity. The watt is the SI unit of power: one joule of energy per second. One kilowatt equals exactly 1,000 watts.
Enter your value and confirm the "From Unit" dropdown is set to Watts -- the result grid updates instantly, showing your value converted into every unit in this power category at once (not just Kilowatts), so you can see multiple equivalent measurements without switching tools. There's no button to press and nothing is sent to a server, so it works the same on a phone with no signal as it does on a desktop.
Kilowatts = Watts × 0.001
A watt is the SI unit of power (one joule of energy per second); BTU/hr (British Thermal Units per hour) is a US customary heat-power unit -- the two describe the same physical quantity (a rate of energy transfer), related by the precise constant 1 watt = 3.412141633 BTU/hr, derived from the exact joule-to-BTU energy relationship.
| Watts | Kilowatts |
|---|---|
| 1 | 0.001 |
| 5 | 0.005 |
| 10 | 0.01 |
| 50 | 0.05 |
| 100 | 0.1 |
Sizing HVAC equipment (air conditioners, heaters) where US spec sheets use BTU/hr but electrical specs use watts. Comparing an appliance's electrical power rating against its heating/cooling output rating. Converting a generator or power supply's wattage rating for an international spec sheet. For related conversions, see Watts to BTU/hr Converter and Electricity Cost Calculator.
This calculator carries full precision internally and only rounds the final displayed result for readability -- if you need more or fewer decimal places than shown, the underlying value is still exact to the limits of floating-point arithmetic.
Multiply the Watts value by 0.001 to get Kilowatts. This calculator does that automatically as you type, so you don't need to do the multiplication by hand.
Yes -- 1 Watts equals 0.001 Kilowatts by definition, so the result is mathematically exact rather than a rounded estimate (the displayed value may be rounded for readability, but the underlying calculation isn't).
Yes -- change the "From Unit" dropdown above the input to switch direction. The same conversion engine handles every unit in this category, not just Watts and Kilowatts.
No -- power (watts, BTU/hr) is a rate of energy transfer, while energy (watt-hours, kWh, BTUs) is a total amount over time. Watts and BTU/hr are both power units, so they convert directly; converting to a total energy figure would additionally require knowing how many hours something ran.
Kilowatts is one of the standard units for measuring power -- see the Practical Uses section above for the specific contexts where it's most commonly encountered.
100 watts equals 0.1 kilowatts, using the same 0.001 factor as the rest of this page.
To convert watts to kilowatts, multiply by 0.001. To go the other way, divide by 0.001 (or multiply kilowatts by 1,000). For example, 12.5 watts × 0.001 = 0.0125 kilowatts, and 150 watts × 0.001 = 0.15 kilowatts.
The watt is the SI unit of power: one joule of energy per second. One kilowatt equals exactly 1,000 watts.
| Watts | Kilowatts |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1,000 | 1 |
How many kilowatts are in 1 watts?
1 watts equals 0.001 kilowatts.
How many watts are in 1 kilowatts?
1 kilowatts equals 1,000 watts.
What is 60 watts in kilowatts?
60 watts equals 0.06 kilowatts, using the same 0.001 factor as the rest of this chart.
Is this conversion exact or approximate?
The 0.001 factor comes from a fixed, exact definitional constant, so the underlying math is exact; the numbers on this page are rounded to seven significant digits for readability, and the calculator above keeps the full-precision value.
Values are rounded to seven significant digits for display; the converter above uses the full-precision factor.
Reference: NIST Weights and Measures