⚡ kcal to kJ — Kilocalorie (Cal) to Kilojoule Converter

Convert energy units — joules, calories, kilowatt-hours, BTU, kilojoules.

Formula 1 kcal = 4.184 kJ
UnitNameValue
J Joule 4184
kJ Kilojoule 4.184
cal Calorie 1000
kWh Kilowatt-hour 0.0011622222
BTU BTU 3.9656512

About Kilocalorie (Cal) to Kilojoule Conversion

The Kilocalorie (Cal) (kcal) and the Kilojoule (kJ) are both units of energy. Converting between them is straightforward using the formula above.

Formula: 1 kcal = 4.184 kJ

This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.

Frequently Asked Questions

How do I convert Kilocalorie (Cal) to Kilojoule?

Use the converter above — enter your value in Kilocalorie (Cal) and the result appears instantly in Kilojoule. The formula is: 1 kcal = 4.184 kJ

How many Kilojoule are in 100 Kilocalorie (Cal)?

100 kcal = 418.4 kJ

What is 1 Kilocalorie (Cal) in Kilojoule?

1 kcal = 4.184 kJ

Is this Kilocalorie (Cal) to Kilojoule converter free?

Yes — Unitafy is completely free, requires no signup, and works instantly in your browser.