Convert kilocalorie (th) to gigajoule
Please provide values below to convert kilocalorie (th) [kcal (th)] to gigajoule [GJ], or Convert gigajoule to kilocalorie (th).
How to Convert Kilocalorie (Th) to Gigajoule
1 kcal (th) = 4.184e-06 GJ
Example: convert 15 kcal (th) to GJ:
15 kcal (th) = 15 × 4.184e-06 GJ = 6.276e-05 GJ
Kilocalorie (Th) to Gigajoule Conversion Table
| kilocalorie (th) | gigajoule |
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Kilocalorie (Th)
A kilocalorie (kcal) is a unit of energy equal to 1,000 calories, commonly used to measure the energy content of food and beverages.
History/Origin
The kilocalorie originated in the 19th century as a unit to quantify heat energy, especially in nutrition and thermodynamics. It was widely adopted in the early 20th century for dietary energy measurement.
Current Use
Today, the kilocalorie is primarily used in nutrition to express the energy content of food and drinks, although it is often simply called a 'calorie' in everyday language.
Gigajoule
A gigajoule (GJ) is a unit of energy equal to one billion joules, used to measure large amounts of energy such as in power generation and fuel consumption.
History/Origin
The gigajoule was introduced as part of the International System of Units (SI) to provide a standard measure for large-scale energy quantities, especially in scientific and industrial contexts, gaining prominence in the 20th century.
Current Use
Gigajoules are commonly used today to quantify energy in fields like energy production, consumption, and engineering, particularly for large-scale systems such as power plants, fuel storage, and energy audits.