June 29, 2026 · 4 min read

Joules to kWh Converter (Free Energy Calculator)

Convert joules, kilojoules, calories, kWh, and BTU. Free, instant, no signup.

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1 kWh = 3,600,000 joules = 860 kilocalories. Energy Converter (J, kWh, cal, BTU) handles them all.

Need power (watts/HP)? Power Converter (Watts, HP, kW). Electricity cost? Electricity Cost Calculator.

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Tools mentioned in this guide

Energy Converter (J, kWh, cal, BTU)
Convert energy between joules, calories, watt-hours, and BTU.
Power Converter (Watts, HP, kW)
Convert between watts, kilowatts, horsepower, and BTU/h.
Electricity Cost Calculator
Estimate how much an appliance costs to run per day/month/year.

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