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Convertitive

Joules to Calories Converter

1 J = 0.239006 cal

1 joule equals 0.239006 calories. To convert joules to calories, multiply the joule value by 0.239006. For quick reference: 1 J = 0.239006 cal, 5 J = 1.19503 cal, 10 J = 2.39006 cal, 100 J = 23.9006 cal.

0.239006
FormulaCalories = Joules × 0.239006
Quick

How to convert joules to calories

  1. Take your value

    Start with your value in joules.

  2. Multiply by 0.239006

    Multiply the joule value by 0.239006. This is the exact conversion factor from joules to calories.

  3. Read the result

    The product is your value in calories. For example, 5 J × 0.239006 = 1.19503 cal.

Conversion formula

The exact factor from joules to calories is 0.239006.

Calories = Joules × 0.239006

Joules to Calories conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Conversion table from joules to calories
Joules (J)Calories (cal)
0.001 J0.00023901 cal
0.01 J0.0023901 cal
0.1 J0.023901 cal
0.5 J0.1195 cal
1 J0.23901 cal
1.5 J0.35851 cal
2 J0.47801 cal
5 J1.195 cal
10 J2.3901 cal
20 J4.7801 cal
50 J11.95 cal
100 J23.901 cal
200 J47.801 cal
250 J59.751 cal
500 J119.5 cal
1000 J239.01 cal
2000 J478.01 cal
2500 J597.51 cal
3600 J860.42 cal
5000 J1195 cal
7500 J1792.5 cal
10000 J2390.1 cal
25000 J5975.1 cal
50000 J11950 cal
100000 J23901 cal
250000 J59751 cal
500000 J119503 cal
1000000 J239006 cal
2000000 J478011 cal
3600000 J860421 cal
5000000 J1195029 cal
10000000 J2390057 cal
25000000 J5975143 cal
50000000 J11950287 cal
100000000 J23900574 cal
250000000 J59751434 cal
500000000 J119502868 cal
1000000000 J239005736 cal
2000000000 J478011472 cal
5000000000 J1195028681 cal
10000000000 J2390057361 cal
20000000000 J4780114723 cal
50000000000 J11950286807 cal
100000000000 J23900573614 cal
1000000000000 J239005736138 cal
10000000000000 J2390057361377 cal
100000000000000 J23900573613767 cal
1000000000000000 J239005736137667 cal
10000000000000000 J2.3901 × 10^15 cal
100000000000000000 J2.3901 × 10^16 cal

Real-world reference

A heartbeat releases about 1 J of mechanical work. Lifting an apple 1 m takes roughly 1 J. In calories, that gives you: 1 J = 0.239006 cal, 10 J = 2.39006 cal, 100 J = 23.9006 cal.

Frequently asked questions

How many calories are in 1 joule?
1 joule equals 0.239006 calories.
How do I convert joules to calories?
Multiply the joule value by 0.239006. So x J × 0.239006 = the equivalent in cal.
What is 5 joules in calories?
5 joules equals 1.19503 calories.
What is 10 joules in calories?
10 joules equals 2.39006 calories.
What is 100 joules in calories?
100 joules equals 23.9006 calories.
How do I convert back from calories to joules?
Multiply the calorie value by 4.184. For example, 1 cal = 4.184 J.
Is the joule bigger than the calorie?
No. 1 joule is smaller than 1 calorie. It takes 4.184 joules to equal 1 calorie.
Are these conversion factors exact?
Yes. The factor of 0.239006 is derived directly from the SI definitions of joule and calorie.

About the joule and the calorie

The joule

The joule (J) is the SI derived unit of energy, work, and heat — defined as the energy transferred when a force of one newton acts over one meter. The joule is the standard unit in physics, chemistry, and most modern engineering documentation.

The calorie

Convertitive uses the thermochemical (small) calorie, defined as exactly 4.184 joules — the energy needed to raise 1 g of water by 1 °C. Do not confuse it with the large calorie (kcal) used on US nutrition labels, which is 1,000 of these small calories.

Related converters

Calories to Joules
cal → J
Joules to Kilojoules
J → kJ
Joules to Kilocalories
J → kcal
Joules to Watt-hours
J → Wh
Joules to Kilowatt-hours
J → kWh
Kilojoules to Joules
kJ → J

Sources