Convert Gigajoule to Kilocalorie
Convert gigajoules to kilocalories by entering a value below.
How to Convert Gigajoules to Kilocalories
The gigajoule and kilocalorie are both units of energy. 1 gigajoule equals 239005.73614 kilocalories. This means to convert gigajoules to kilocalories, you multiply by 239005.73614.
Formula
Step-by-Step Example
Convert 5 GJ to kilocalories:
We need to convert gigajoules to kilocalories
Since 1 GJ = 239005.73614 kcal, multiply by 239005.73614
5 × 239005.73614 = 1195028.6807
5 GJ = 1195028.6807 kcal
Gigajoule to Kilocalorie Conversion Table
Quick reference table for common gigajoule to kilocalorie conversions. Click any value for detailed calculation.
| Gigajoules (GJ) | Kilocalories (kcal) |
|---|---|
| 0.1 GJ | 23900.573614 kcal |
| 0.5 GJ | 119502.86807 kcal |
| 1 GJ | 239005.73614 kcal |
| 2 GJ | 478011.47228 kcal |
| 5 GJ | 1195028.6807 kcal |
| 10 GJ | 2390057.3614 kcal |
| 25 GJ | 5975143.4034 kcal |
| 50 GJ | 11950286.807 kcal |
| 100 GJ | 23900573.614 kcal |
About These Units
Gigajoule (GJ)
A gigajoule (GJ) equals 1 billion joules or approximately 277.8 kilowatt-hours. Gigajoules measure natural gas billing, industrial energy use, and building energy consumption. One GJ equals about 26.8 cubic meters of natural gas.
Kilocalorie (kcal)
A kilocalorie (kcal), often written as "Calorie" (capital C) on food labels, equals 1,000 small calories or 4,184 joules. Kilocalories measure food energy. Average adult needs 2,000-2,500 kcal daily. Walking one mile burns about 80-100 kcal.
Frequently Asked Questions
How do I convert gigajoules to kilocalories?
To convert gigajoules to kilocalories, multiply the value by 239005.73614. For example, 10 GJ = 2390057.3614 kcal.
How many kilocalories are in 1 gigajoule?
1 gigajoule equals 239005.73614 kilocalories.
What is the formula for gigajoules to kilocalories?
The formula is: kcal = GJ × 239005.73614.