NiftyRecipe Online energy conversion
BTU/cal 252.164401 BTU/kcal 0.252164 kcal/MJ 0.004184 kJ/kcal 0.239006 cal/BTU 0.003966 kWh/kcal 860.42065
cal / J

80 calories in joule

334.72 joule

1 cal = 4.184 J · factor

Reverse: 1 joule ≈ 0.239006 calorie. Use the reference table for common values.

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

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

All amounts for this pair

FAQ for cal → J
80 calories in joule

NiftyRecipe converts 80 calories to 334.72 joule with a fixed SI-linked factor.

Kilojoules and megajoules describe energy on a scientific scale. The ratio applied here is 1 calorie = 4.184 joule, so this amount is 334.72 joule. Reverse check: 1 joule ≈ 0.239006 calorie. That helps when a lab notebook or spreadsheet only lists one column.

Change the value in the calculator for homework, datasheets or rough process estimates. The wording stays technical on purpose so these pages read differently from food-label articles on the same site.