What Is kcal?
kcal means kilocalorie, the food-energy Calorie used on nutrition labels. One kcal equals 1,000 small calories or 4,184 joules.
kcal Calculator
Enter an energy value and the conversion updates automatically.
Result updates automatically.
Formula: joules = kilocalories × 4184
What kcal Means
In nutrition, kcal is the same as a food Calorie with a capital C. It measures the energy food can provide. In science, a small calorie is 4.184 joules, while one kilocalorie is 4,184 joules.
1 kilocalorie
4184 joules
10 kilocalories
41840 joules
100 kilocalories
4.184e+5 joules
Energy Formula Notes
The calculator converts through joules as the base energy unit, then formats the result for the selected energy unit.
What Is kcal? FAQ
Which energy units are supported?
This tool supports joules, kilojoules, BTU, small calories, kilocalories, watt-hours, kilowatt-hours, foot-pounds, and newton-meters.
Is kcal the same as Calorie?
Yes. On food labels, Calorie usually means kilocalorie, or kcal. 1 kcal equals 1,000 small calories.
Can I reverse the energy conversion?
Yes. Use the swap button to reverse the selected units and calculate the opposite direction.