How many megajoule in 1 gigacalorie?
The answer is 4185.8.
We assume you are converting between megajoule and gigacalorie [15 °C].
You can view more details on each measurement unit:
megajoule or
gigacalorie
The SI derived unit for energy is the joule.
1 joule is equal to 1.0E-6 megajoule, or 2.3890295761862E-10 gigacalorie.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between megajoules and gigacalories.
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You can do the reverse unit conversion from
gigacalorie to megajoule, or enter any two units below:

The SI prefix "mega" represents a factor of
10^{6}, or in exponential notation, 1E6.

So 1 megajoule = 10^{6} joules.

The definition of a joule is as follows:

The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honor of the physicist James Prescott Joule (1818-1889).

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