Gigajoule to Calorie (th) Converter
Quick answer
To convert Gigajoules to Calorie (th)s, multiply by 239,005,736.13766727 (or divide by 4.184000e-9). Therefore, 1 Gigajoule (GJ) equals 239,005,736.13766727 Calorie (th)s (cal).
Formula: cal = GJ × 239,005,736.13766727. Worked example: 10 GJ = 2,390,057,361.376673 cal.
Convert Gigajoule (GJ) to Calorie (th) (cal) online with our free unit converter. In energy, 1 GJ = 239,005,736.137667 cal. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Gigajoule to Calorie (th)
- Step 1 — start with the formula. cal = GJ × 239,005,736.1376673
- Step 2 — substitute your figure. 10 GJ × 239,005,736.13766727
- Step 3 — read the result. 10 GJ = 2,390,057,361.376673 cal
- Step 4 — check it in reverse. GJ = cal × 4.184000e-9 returns Invalid GJ, which matches the figure you started with.
Energy Converter
27 units available
1 GJ = 239,005,736.137667 cal
Formula:
cal = GJ × 239,005,736.1376673With your value: 1 GJ = 239,005,736.13766727 cal
How big is that?
Everyday references on a logarithmic scale, all expressed in gigajoule so you can sanity-check the result.
Other Gigajoule to Calorie (th) conversions
Gigajoule to Calorie (th) Conversion Table
| Gigajoule (GJ) | Calorie (th) (cal) |
|---|---|
| 0.5 | 119,502,868.068834 |
| 1 | 239,005,736.137667 |
| 2 | 478,011,472.275335 |
| 5 | 1,195,028,680.688336 |
| 10 | 2,390,057,361.376673 |
| 15 | 3,585,086,042.06501 |
| 20 | 4,780,114,722.753345 |
| 25 | 5,975,143,403.441683 |
| 50 | 11,950,286,806.883366 |
| 100 | 23,900,573,613.76673 |
| 250 | 59,751,434,034.416824 |
| 500 | 119,502,868,068.83365 |
| 1000 | 239,005,736,137.6673 |
Calorie (th) to Gigajoule Conversion Table
| Calorie (th) (cal) | Gigajoule (GJ) |
|---|---|
| 0.5 | 2.092000e-9 |
| 1 | 4.184000e-9 |
| 2 | 8.368000e-9 |
| 5 | 2.092000e-8 |
| 10 | 4.184000e-8 |
| 15 | 6.276000e-8 |
| 20 | 8.368000e-8 |
| 25 | 1.046000e-7 |
| 50 | 2.092000e-7 |
| 100 | 4.184000e-7 |
| 250 | 1.046000e-6 |
| 500 | 2.092000e-6 |
| 1000 | 4.184000e-6 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Gigajoule (GJ)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Calorie (th) (cal)
Energy
The thermochemical calorie is exactly 4.184 J.
The International Table calorie (4.1868 J) and the 15 °C calorie differ slightly.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Gigajoule to Calorie (th)
To convert from Gigajoule (GJ) to Calorie (th) (cal), multiply the value by 239,005,736.13766727.
Formula: cal = GJ × 239,005,736.1376673
Reverse: GJ = cal × 4.184000e-9
Step-by-Step Example
- Start with your value in Gigajoule. For example: 5 GJ
- Multiply by the conversion factor: 5 x 239,005,736.13766727
- The result is: 1,195,028,680.688336 cal
Gigajoule and Calorie (th) Relationship
This calculation facilitates standardized conversion between recognized units of energy. Since 1 Gigajoule equals approximately 2.390e+8 Calorie (th)s, the Gigajoule represents a larger unit interval than the Calorie (th). Understanding the relationship between Gigajoule and Calorie (th) is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Gigajoule
The Gigajoule (symbol: GJ) is a recognized unit in the Metric (SI) measurement framework, utilized within energy applications for precision and standardized data representation.
Common uses of Gigajoule: energy calculations, engineering and science, education.
About Calorie (th)
The thermochemical calorie equals 4.184 joules. Not to be confused with the food Calorie (kcal), which equals 1,000 calories.
Common uses of Calorie (th): chemistry, nutrition, heating.
Frequently Asked Questions
- How many Calorie (th)s are in 1 Gigajoule?
- There are exactly 239,005,736.13766727 Calorie (th)s in 1 Gigajoule. This means the conversion factor from Gigajoule to Calorie (th) is 239,005,736.13766727.
- What is the formula to convert Gigajoule to Calorie (th)?
- The formula to convert Gigajoule to Calorie (th) is: cal = GJ × 239,005,736.1376673. For example, to convert 10 Gigajoules to Calorie (th)s, you would multiply 10 by 239,005,736.13766727.
- What is a Gigajoule?
- The Gigajoule (symbol: GJ) is a recognized unit in the Metric (SI) measurement framework, utilized within energy applications for precision and standardized data representation.
- What is a Calorie (th)?
- The thermochemical calorie equals 4.184 joules. Not to be confused with the food Calorie (kcal), which equals 1,000 calories.
- What are the common uses of Gigajoule?
- The Gigajoule is commonly used in energy calculations, engineering and science, education.
Related Energy Conversions
Cite this page
UnitConvertLab. (2026). Gigajoule to Calorie (th) converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/gigajoule-to-calorie