21 Calories to Kilojoules

Instantly convert 21 Calories to Kilojoules. Free online converter.

21 Calories = 0.087864 Kilojoules
21 cal = 0.087864 kJ

Convert Another Value

cal
kJ
21 cal = 0.087864 kJ

More Calories to Kilojoules Conversions

1 cal = 0.004184 kJ 2 cal = 0.008368 kJ 5 cal = 0.02092 kJ 10 cal = 0.04184 kJ 15 cal = 0.06276 kJ 20 cal = 0.08368 kJ 25 cal = 0.1046 kJ 50 cal = 0.2092 kJ
View all Calories to Kilojoules conversions
← 20 cal = 0.08368 kJ 22 cal = 0.092048 kJ →

How to Convert 21 Calories to Kilojoules

1

Know the conversion factor

1 Calorie equals 0.004184 Kilojoules.

2

Multiply your value

Take your value (21) and multiply it by 0.004184.

21 × 0.004184
3

Get your result

The result is 0.087864 Kilojoules.

21 cal = 0.087864 kJ

Frequently Asked Questions

How many Kilojoules is 21 Calories?

21 Calories is equal to 0.087864 Kilojoules.

How do I convert 21 Calories to Kilojoules?

To convert Calories to Kilojoules, multiply the value by 0.004184. So, 21 cal × 0.004184 = 0.087864 kJ.

What is the formula to convert Calories to Kilojoules?

The formula is: kJ = cal × 0.004184. For example, 21 cal = 0.087864 kJ.

How many Calories is 0.087864 Kilojoules?

0.087864 Kilojoules is equal to 21 Calories. This is the reverse conversion.

About These Units

cal Calorie Learn more → kJ Kilojoule Learn more →

Quick Facts

Conversion Formula

kJ = cal × 0.004184

Reverse Conversion

0.087864 Kilojoules = 21 Calories

Convert reverse →