CALCULATOR
Convert · Calorie To Gigajoule
Converts energy from calories to gigajoules using the standard conversion factor.
How the calculation works
gigajoules = calories * 4.184E-9
Worked example
With energy in calories 1,000,000 cal, energy in gigajoules is 0.004184 GJ.
Assumptions and limits
The calorie is defined as the thermochemical calorie (cal_th), which is exactly 4.184 joules. The gigajoule is defined as 10^9 joules.