kilowatt
kWpower · International · Modern
1 kW = exactly 1000 W.
Converter
power · International · Modern
watt
Wexact
- Record
- M030
- Definition quality
- Standardized
- Conversion mode
- multiplicative
- Calculator
- Fully calculable
Etymology/person-name origin not separately researched unless stated by standards history; current definition/conversion resolved.
Definition
SI derived unit of power and radiant flux; 1 W = 1 J/s = 1 kg·m²·s⁻³.
History & use
The watt was part of the international MKS electrical/mechanical unit definitions ratified in the 1940s.
Modern use
Standard SI unit for power.
Did you know?
A watt measures a rate of energy transfer: one joule per second.
Sources & evidence
Related measurements
power · International with multiple conventions · Modern/historical
Mechanical hp ≈ 745.6999 W; metric hp ≈ 735.4988 W; other named conventions also exist
variant