Energy Converter

Convert between calories, joules, kilowatt-hours, BTU, and more

From

4.184

All conversions

Joules (J)4184

Kilojoules (kJ)4.184

Calories (cal)1000

Kilocalories (kcal)1

Watt-hours (Wh)1.1622

Kilowatt-hours (kWh)0.0012

BTU3.9657

Electronvolts (eV)2.6117353308364544e+22

Frequently Asked Questions

How many calories in a joule?▼

1 calorie = 4.184 joules. 1 food Calorie (kcal) = 4,184 joules.