Watts to Joules Calculator
Convert watts to joules and back, and convert between joules, kilojoules, megajoules, watt-hours, kWh, and calories. A joule is a unit of energy — one watt running for one second equals one joule — so to get joules from watts you also need the time: joules = watts × seconds.
Converting watts to joules? Enter power and time
A joule is energy: 1 watt running for 1 second = 1 joule, so joules = watts × seconds. 1 Wh = 3,600 J · 1 kWh = 3.6 million J · 1 cal = 4.184 J.
Joules
6,000 J
- Joules
- 6,000 J
- Kilojoules
- 6 kJ
- Megajoules
- 0.006 MJ
- Watt-hours
- 1.667 Wh
- Kilowatt-hours
- 0.002 kWh
- Calories
- 1,434.034
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Open converterSources & standards
This tool's methodology and data follow US standards and authoritative public datasets: