calories to joules
How do you convert calories to Joules?
To convert calories to Joules, multiply the value in calories by the exact conversion factor of 4.184. For instance, a small chemical calorie of 50 cal equals 50 × 4.184, which is exactly 209.2 Joules. The Joule is the standard metric measurement for heat, mechanical work, and electrical energy, while the calorie is the thermal heat unit. Precise conversion factors are vital in nutritional sciences and engineering thermodynamics.
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❓ Frequently Asked Questions (FAQ)
What is the formula for converting calories to Joules?▼
The formula is: Joules = Calories × 4.184.
How many Joules are in a single small calorie?▼
There are exactly 4.184 Joules in a calorie.
How do I convert a 200-Calorie (kcal) snack to Joules?▼
200 kcal × 4184 = 836,800 Joules (or 836.8 kJ).
Why is the conversion factor exactly 4.184?▼
It represents the mechanical equivalent of heat, originally measured by James Prescott Joule in the 1840s.
What is the definition of a calorie?▼
A calorie is defined as the amount of heat energy required to raise the temperature of 1 gram of water by 1°C.
What is the abbreviation for Joule and calorie?▼
Joule is abbreviated as "J", and calorie as "cal".