Calculyn

Energy Converter

Convert between joules, calories, kilocalories, BTU, and kilowatt-hours.

Results update as you type.

1,000 kJ equals

239.01kcal
In joules
1,000,000
1,000 kJ equals239.01

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Quick answer

1,000 kJ ≈ 239 food Calories (kcal).

How it works

Food 'Calories' (capital C) are kilocalories — 1 food Calorie = 1,000 small calories = 4,184 joules.

Formula

Convert to joules first, then to the target unit.

Assumptions & limitations

  • Results are rounded for display.

Frequently asked questions

How many kWh is a BTU?

1 kWh ≈ 3,412 BTU — handy for comparing heaters and air conditioners.