Gigajoule to Calorie (th) Converter

Energy Converter

27 units available

Decimals:

From

To

239,005,736.137667

1 GJ = 239,005,736.137667 cal

Formula:

cal = GJ × 239,005,736.1376673

With 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.

Heartbeat (1/1.0e+9 your value)1.00e-9 GJ

AA battery charge (1/1.0e+5 your value)0.0000100 GJ

Slice of bread (1/3.6e+3 your value)0.000280 GJ

Daily food intake (1/1.2e+2 your value)0.00840 GJ

Litre of petrol (1/29 your value)0.0342 GJ

Your value1.00 GJ

Other Gigajoule to Calorie (th) conversions

2 GJ to cal 3 GJ to cal 4 GJ to cal 5 GJ to cal 6 GJ to cal 7 GJ to cal 8 GJ to cal

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

Exact conversion

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

Exact conversion

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

About Gigajoule

The gigajoule (GJ) is a unit of energy and work. One gigajoule equals 1.000000 × 10^+9 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: 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: chemistry, nutrition, heating.

Frequently Asked Questions

How many Calorie (th) are in 1 Gigajoule?

There are exactly 239,005,736.13766727 Calorie (th) 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 Gigajoule to Calorie (th), you would multiply 10 by 239,005,736.13766727.

What is a Gigajoule?