1 cal to j

Updated July 2026

1 cal equals 4.184 J

1 calorie = 4.184 J. That is how many joules there are in 1 calorie. Enter any value in the free energy converter to convert calories to joules (and every other unit) instantly — it runs privately in your browser.

Formula: Multiply by 4.184 — 1 calorie = 4.184 joules. So 1 × 4.184 = 4.184 J.

cal to j conversion table

calorie (cal)joules (J)
0.25 cal1.046 J
0.5 cal2.092 J
0.75 cal3.138 J
1 cal4.184 J
1.25 cal5.23 J
1.5 cal6.276 J
1.75 cal7.322 J

Frequently asked questions

How many joules is 1 calorie?
1 calorie is 4.184 joules. Multiply cal by 4.184 to get j.
What is 1 cal to j?
1 calorie = 4.184 J.
How do you convert cal to j?
Multiply by 4.184 — 1 calorie = 4.184 joules. So 1 × 4.184 = 4.184 J.

Other cal to j conversions

Convert 1 cal to other units