Kilocalories to Joules
1 kcal = 4,184 joules. Multiply kilocalories by 4,184 to get joules; divide joules by 4,184 to go back.
Kilocalories to joules conversion table
How to convert kilocalories to joules
Step 1
Take the value in kilocalories.
10 kcal
Step 2
Multiply by 4,184.
10 × 4,184
Step 3
Round to the precision you need.
= 41,840 j
The factor is rounded to six significant digits; the copy button on any result gives the full-precision value.
Common kilocalories to joules conversions
1 kcal → 4,184 j 1.1 kcal → 4,602.4 j 2 kcal → 8,368 j 3 kcal → 12,552 j 4 kcal → 16,736 j 5 kcal → 20,920 j 6 kcal → 25,104 j 7 kcal → 29,288 j 8 kcal → 33,472 j 9 kcal → 37,656 j 10 kcal → 41,840 j 11 kcal → 46,024 j 12 kcal → 50,208 j 13 kcal → 54,392 j 14 kcal → 58,576 j 15 kcal → 62,760 j 16 kcal → 66,944 j 17 kcal → 71,128 j 18 kcal → 75,312 j 19 kcal → 79,496 j 20 kcal → 83,680 j 21 kcal → 87,864 j 22 kcal → 92,048 j 23 kcal → 96,232 j
These are the values people actually search for. Any other number works in the converter above; only these pages are listed for search engines.
Frequently asked questions
How many joules are in a kcal?
There are 4,184 joules in one kcal. Going the other way, one j is 0.000239006 kilocalories.
How do I convert kilocalories to joules?
Multiply the number of kilocalories by 4,184. For example, 10 kcal × 4,184 = 41,840 j.
What is 5 kilocalories in joules?
5 kilocalories is 20,920 joules.
What is 100 kilocalories in joules?
100 kilocalories is 418,400 joules.