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Energy Converter

Convert energy instantly between joules, calories, kilowatt-hours, and BTU.

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1 Kilocalories equals

0 Joules

How to Calculate & Formula Details

Mathematical Model Formula1 calorie = 4.184 joules. 1 kWh = 3,600,000 joules. 1 BTU = 1,055.06 joules.

An energy converter switches between scientific and everyday energy units — used in nutrition (calories), electricity billing (kWh), and heating/cooling (BTU).

Key Conversion Factors

1 calorie = 4.184 joules
1 kilowatt-hour (kWh) = 3,600,000 joules
1 BTU = 1,055.06 joules

Frequently Asked Questions

How many joules are in a food calorie?

A food "Calorie" (kilocalorie) equals 4,184 joules. A small "calorie" equals 4.184 joules.

What is a kWh used for?

A kilowatt-hour is the standard unit electricity companies use to bill energy consumption — the energy of using 1,000 watts for one hour.

What does BTU stand for?

BTU stands for British Thermal Unit, commonly used to rate the heating or cooling capacity of appliances like air conditioners and furnaces.

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