Energy is the ability to do work. The energy can be measured using multiple units. Calorie and Joule are the units of energy. The relation between calorie and joule is proportionate. This implies any change in Calorie will change its equivalent value in Joules.
Calorie And Joule
The relation between Calorie and Joule can be numerically written as-
| 1 calorie = 4.2 joules |
| 1 Calorie/kcal = 4.2 kilojoules. |
Where,
- a calorie is the unit of energy.
- Calorie or kilocalorie is the unit of energy = 1000 calories.
- Joule is the unit of energy
- Kilojoule is the unit of energy, = 1000 joules.
Please note that calories and calories are not the same. 1 Calorie = 1000 calories. Sometimes Calorie is often called as kilocalorie. Calorie and calorie both are the units of energy.
Relationship Between Calorie And Joule
The relationship between calorie and joule are proportionate. Which implies, the calorie is directly proportional to the joule. That means-
- When the value in terms of calorie increases, its corresponding value in joules also increases at a rate of 4.2.
- When the value in terms of calorie decreases, its corresponding value in joules also decreases at a rate of 4.2.
Refer to the table given below for definition, unit, and symbol of calorie and joule in physics and life science.
| Definition | Symbol | |
| calorie | The energy in the form of heat required to warm 1 kilogram of water by 10 C | cal |
| joule | Work done (energy transferred) on an object when a force of 1 N acts on it and moves it for a distance of 1 m in the direction of the force | J |
Here, 1 newton is written in short as 1 N.
Joule calorie conversion
In, physics, the conversion between two units of energy; calorie to joule and joule to calorie is crucial in solving problems. Scroll down the page for the list of values and their conversion from calorie to joule and joule to calorie.
Calorie to Joule
The table given below comprises some commonly used calorie to joule conversion values –
| calorie | joule |
| 1 | 4.184 |
| 20 | 83.68 |
| 30 | 125.52 |
| 40 | 167.36 |
| 50 | 209.2 |
| 100 | 418.4 |
| 500 | 2092 |
| 1,000 or 1kcal | 4184 |
| 5,000 or 5 kcal | 20920 |
| 10,000 or 10 kcal | 41840 |
Joule to Calorie
The table given below comprises some commonly used joule to calorie conversion values –
| Joule | Calorie or Kilocalorie |
| 1 | 0.000239006 |
| 10 | 0.00239006 |
| 20 | 0.00478011 |
| 30 | 0.00717017 |
| 40 | 0.00956023 |
| 50 | 0.0119503 |
| 100 | 0.0239006 |
| 500 | 0.119503 |
| 1000 | 0.239006 |
| 5000 | 1.195029 |
Hope you understood the relation between calorie and joule and Joule calorie conversion for any given values in physics.