Gram calorie to JouleConverter
Instantly convert Gram calorie (cal) to Joule (J). Free, accurate, and easy to use.
How to Convert Gram calorie to Joule
To convert Gram calorie (cal) to Joule (J), multiply your value by 4.184.
Example: 5 cal × 4.184 = 20.92 J
What is a Gram calorie?
The gram calorie (small calorie, cal) is the heat required to raise the temperature of 1 gram of water by 1 °C, equal to exactly 4.184 Joules. It is used in chemistry and thermodynamics for heat calculations. The food 'Calorie' (capital C) printed on nutrition labels is actually a kilocalorie (kcal) — 1,000 times larger. One gram calorie is a very small amount of energy in everyday terms.
What is a Joule?
The Joule (J) is the SI unit of energy, defined as the work done when a force of 1 Newton moves an object 1 meter. Named after 19th-century physicist James Prescott Joule, who established the mechanical equivalent of heat, it is the universal unit for all energy forms in science. Lifting a 100-gram apple one meter requires approximately 1 Joule. One food Calorie (kcal) equals 4,184 Joules.
Gram calorie to Joule Conversion Table
| Gram calorie (cal) | Joule (J) |
|---|---|
| 0.001 cal | 0.004184 J |
| 0.01 cal | 0.04184 J |
| 0.1 cal | 0.4184 J |
| 0.5 cal | 2.092 J |
| 1 cal | 4.184 J |
| 2 cal | 8.368 J |
| 5 cal | 20.92 J |
| 10 cal | 41.84 J |
| 20 cal | 83.68 J |
| 50 cal | 209.2 J |
| 100 cal | 418.4 J |
| 200 cal | 836.8 J |
| 500 cal | 2092 J |
| 1000 cal | 4184 J |
| 5000 cal | 20920 J |
| 10000 cal | 41840 J |
| 50000 cal | 209200 J |
| 100000 cal | 418400 J |
| 1000000 cal | 4184000 J |
| 1000000000 cal | 4.1840e+9 J |
Frequently Asked Questions
How do I convert Gram calorie to Joule?
Multiply the Gram calorie value by 4.184. Formula: J = cal × 4.184. Example: 10 cal = 41.84 J.
How many Joule are in one Gram calorie?
One Gram calorie (cal) equals 4.184 Joule (J).
How many Gram calorie are in one Joule?
One Joule (J) equals 0.23900574 Gram calorie (cal).
What is the exact conversion factor from Gram calorie to Joule?
The conversion factor is 4.184. Multiply any cal value by this number to get J. For the reverse, multiply by 0.23900574.
How do I convert Joule back to Gram calorie?
Divide by 4.184, or equivalently multiply by 0.23900574. Formula: cal = J ÷ 4.184.
Is the Gram calorie-to-Joule conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 4.184 is exact and universally agreed upon.