cal → GJ converter

Convert calories to gigajoule (Energy)

1 cal = 0.000000004184 GJ · 1 GJ = 239005736.1 cal

Common values: 10 cal 50 cal 100 cal 500 cal 1000 cal

1 cal = 4.184e-9 GJ

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Calories to gigajoule Conversion

1 calories (cal) is equal to 0.000000004184 gigajoule (GJ).

1 cal = 0.000000004184 GJ

or

1 GJ = 239005736.1 cal

Formula

To convert a energy from calories (cal) to gigajoule (GJ), divide the energy in calories by 239005736.1

e(GJ) = e(cal) / 239005736.1

Examples:

Convert 1 calories to gigajoule:

e(GJ) = 1cal / 239005736.1 = 0.000000004184 GJ

Conversion table

Calories (cal) Gigajoule (GJ)
1 cal 4.184e-9 GJ
2 cal 8.368e-9 GJ
3 cal 1.2552e-8 GJ
5 cal 2.092e-8 GJ
10 cal 4.184e-8 GJ
20 cal 8.368e-8 GJ
25 cal 1.046e-7 GJ
50 cal 2.092e-7 GJ
100 cal 4.184e-7 GJ
250 cal 1.046e-6 GJ
500 cal 2.092e-6 GJ
1000 cal 4.184e-6 GJ
Gigajoule (GJ) Calories (cal)
1 GJ 2.390057361376673e8 cal
2 GJ 4.780114722753346e8 cal
3 GJ 7.170172084130019e8 cal
5 GJ 1.195029e9 cal
10 GJ 2.390057e9 cal
20 GJ 4.780115e9 cal
25 GJ 5.975143e9 cal
50 GJ 1.195029e10 cal
100 GJ 2.390057e10 cal
250 GJ 5.975143e10 cal
500 GJ 1.195029e11 cal
1000 GJ 2.390057e11 cal

Frequently asked questions

How do I convert calories to gigajoule?

Divide the value in calories by 239005736.1 to get the result in gigajoule. For example, 5 cal ÷ 239005736.1 = 2.092e-8 GJ.

How many gigajoule are in 1 calories?

1 calories (cal) is equal to 4.184e-9 gigajoule (GJ).

How do I convert gigajoule back to calories?

Use the inverse operation: multiply the value in gigajoule by 239005736.1 to get the result in calories.

How accurate is the calories to gigajoule conversion?

The converter multiplies by the conversion factor 239005736.1 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.

Sources

Conversion factors are based on internationally recognised standards:

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