NiftyRecipe Online energy conversion
BTU/kJ 1.055056 kcal/cal 1000 MJ/kcal 239.005736 kJ/MJ 0.001 MJ/kWh 0.277778 BTU/kcal 0.252164
cal / J

Calorie to Joule converter

1 cal = 4.184 J

This is the Calorie to Joule converter. 1 cal = 4.184 J.

Enter a value and click Calculate - opens the page with the new result

Common values

joule to calorie 2 calories in joule 3 calories in joule 4 calories in joule 5 calories in joule 6 calories in joule 8 calories in joule 10 calories in joule 12 calories in joule 15 calories in joule 20 calories in joule

Same amount, other units

1 calorie → kcal 1 calorie → BTU 1 calorie → kJ 1 calorie → kWh 1 calorie → MJ

Related converters

cal → kcal cal → BTU cal → kJ cal → kWh cal → MJ
Formula: calorie to joule

J = cal × 4.184 (1 CAL = 4.184 J)

Reference values: calorie → joule
cal J
1 cal 4.184 J
100 cal 418.4 J
200 cal 836.8 J
500 cal 2092 J
1000 cal 4184 J
2000 cal 8368 J
Common conversions
1 cal → 4.184 J 2 cal → 8.368 J 3 cal → 12.552 J 4 cal → 16.736 J 5 cal → 20.92 J 6 cal → 25.104 J 8 cal → 33.472 J 10 cal → 41.84 J 12 cal → 50.208 J 15 cal → 62.76 J 20 cal → 83.68 J 25 cal → 104.6 J
FAQ for cal → J
How much is 1 calorie in joule?

4.184 joule (1 calorie = 4.184 joule).

How many kJ in 1 MJ?

Exactly 1000 kJ. Larger or mixed conversions still follow the fixed chain used by the calculator.

When is MJ more practical than kJ?

For larger totals-process energy, some statistical tables. Food labels usually stay in kJ or kcal.

Manual formula?

J = cal × 4.184 (1 CAL = 4.184 J)

Reverse factor?

1 joule ≈ 0.239006 calorie.

How the Calorie to Joule converter works

This hub describes the pair, not a single number.

NiftyRecipe shows the factor and selected amount pages.