Skip to content
Engyna

Convert kilocalories to joules

Convert kilocalories (kcal) to joules (J). 1 kcal = 4,184 J, and 1 J = 0.000239006 kcal.

100 kcal = 418,400 J

KCAL to Joules formula

J = kcal × 4,184

Multiply the number of kilocalories by 4,184.

Example: To convert 100 kcal to joules: 100 × 4,184 = 418,400 J.

Quick answers

What is 100 kcal in joules?
100 kcal = 418,400 J
What is 500 kcal in joules?
500 kcal = 2,092,000 J
What is 2,000 kcal in joules?
2,000 kcal = 8,368,000 J

KCAL to Joules conversion table

Joules to KCAL table
kilocalories (kcal)joules (J)
1 kcal4,184 J
50 kcal209,200 J
100 kcal418,400 J
150 kcal627,600 J
200 kcal836,800 J
250 kcal1,046,000 J
300 kcal1,255,200 J
500 kcal2,092,000 J
1,000 kcal4,184,000 J
1,500 kcal6,276,000 J
1,800 kcal7,531,200 J
2,000 kcal8,368,000 J
2,500 kcal10,460,000 J
3,000 kcal12,552,000 J

Frequently asked questions

How many joules are in a kilocalorie?

There are 4,184 joules in a kilocalorie (1 kcal = 4,184 J).

How do I convert kilocalories to joules?

Multiply the number of kilocalories by 4,184. To convert 100 kcal to joules: 100 × 4,184 = 418,400 J.

Is the KCAL to Joules conversion exact?

Yes. Both units are defined exactly, so 1 kilocalorie is exactly 4,184 joules. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 100 kcal in joules?

100 kcal = 418,400 J.

How do I convert joules back to kilocalories?

Use the reverse relationship: 1 J = 0.000239006 kcal. The Joules to KCAL page has a converter and a full table.

More energy conversions

All unit conversions