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Energy Converter

Convert Calorie (Gram) to Joule.

Input the value of calories (g) below to convert instantly to joules with standard conversions, definitions, and equations.

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cal
J
Value in Joules = Value in Calories (g) × 4.184 Multiply the value in calories (g) by the conversion factor 4.184.

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How to Convert Calories (g) to Joules

To convert calorie (gram) to joule, we use the official conversion formulas. Below is the mathematical formula, plain-English explanation, and a worked example.

calorie-to-joule-formula.py
# Mathematical Formula
Value in Joules = Value in Calories (g) × 4.184
# Worked Example (5 cal)
5 cal × 4.184 = 20.9200 J
What is a Calorie (Gram)?

Calorie (Gram) (cal)

Energy required to raise the temperature of 1g of water by 1°C.

What is a Joule?

Joule (J)

The base SI unit of energy, equal to work done by a force of one newton moving one meter.

Calorie (Gram) to Joule Conversion Table

Calorie (Gram) (cal) Joule (J)
1 cal 4.184 J
2 cal 8.368 J
3 cal 12.552 J
5 cal 20.92 J
10 cal 41.84 J
15 cal 62.76 J
20 cal 83.68 J
25 cal 104.6 J
50 cal 209.2 J
100 cal 418.4 J
250 cal 1046 J
500 cal 2092 J
1000 cal 4184 J

Joule to Calorie (Gram) Conversion Table

Joule (J) Calorie (Gram) (cal)
1 J 0.23901 cal
2 J 0.47801 cal
3 J 0.71702 cal
5 J 1.19503 cal
10 J 2.39006 cal
15 J 3.58509 cal
20 J 4.78011 cal
25 J 5.97514 cal
50 J 11.95029 cal
100 J 23.90057 cal
250 J 59.75143 cal
500 J 119.50287 cal
1000 J 239.00574 cal
Questions

Frequently Asked Questions

How do I convert calories (g) to joules?

Multiply the value in calories (g) by the conversion factor 4.184. For example, to convert 5 calories (g) to joules: 5 × 4.184 = 20.9200 J.

What is the conversion factor from calorie (gram) to joule?

The conversion factor is 4.184. One calorie (gram) is equal to 4.184 joules.

What is the reverse conversion from joule to calorie (gram)?

To convert joules back to calories (g), multiply by 0.239006 (or divide the value by 4.184). One joule is equal to 0.239006 calories (g).

How many Joules are in 1 Kilowatt-hour (kWh)?

There are exactly 3,600,000 Joules (or 3.6 Megajoules) in 1 kWh.

What is the difference between a calorie and a Calorie?

A lowercase calorie (cal) is a small metric unit (4.184 J). A capitalized Calorie (Cal) is a food calorie, which is actually a kilocalorie (1,000 small calories or 4,184 J).

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