Power Converter

How to use this calculator: W to kW

1. 1Enter the value measured in watt (W).
2. 2Confirm the direction is Watt (W) to Kilowatt (kW); reversing the units changes the factor or offset.
3. 3Apply kW = W × 0.001. The live converter performs this substitution as you type.
4. 4Read the answer in kW and keep only justified precision.

Conversion formula

Watt and Kilowatt express the same power quantity. This page converts through the category's canonical base unit, except temperature and fuel-economy pairs, which use their explicit scale or reciprocal equations.

The units measure the same quantity at different scales: 1 W = 0.001 kW, and 1 kW = 1,000 W.

Worked conversion example: Watt to Kilowatt

1. Given: 1 W
2. Substitute: kW = 1 × 0.001 = 0.001
3. Result: 1 W = 0.001 kW

Accuracy checklist

The converter keeps extra precision internally. Report only the precision supported by the original measurement and follow the required rounding rule.

Direction check: a smaller unit usually gives a larger number; temperature is an exception.

Unit definitions and SI traceability: NIST Office of Weights and Measures — SI Units.