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Calories to Gigajoules Converter

Convert calories to gigajoules and back instantly with formula and common values.

cal

Gigajoules

0

GJ

6.8 cal = 0 GJ

GJ = cal × 4.1840e-9

Calories to Gigajoules: 1 cal equals 4.18400e-9 GJ. To convert calories to gigajoules, multiply by 4.18400e-9 (GJ = cal × 4.1840e-9). For example, 10 cal = 4.18400e-8 GJ.

How to Convert Calories to Gigajoules

To convert from calories to gigajoules, multiply the value by 4.18400e-9. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Calories to Gigajoules: GJ = cal × 4.1840e-9
  • Gigajoules to Calories: cal = GJ ÷ 4.1840e-9

Calories to Gigajoules Conversion Chart

Calories (cal)Gigajoules (GJ)
0.14.18400e-10
0.251.04600e-9
0.52.09200e-9
14.18400e-9
28.36800e-9
31.25520e-8
52.09200e-8
104.18400e-8
208.36800e-8
251.04600e-7
502.09200e-7
1004.18400e-7
2501.04600e-6
10004.18400e-6

Understanding the Units

What is a Calorie?

The thermochemical calorie equals exactly 4.184 joules; the historical "small" calorie raised one gram of water by one degree Celsius.

Common contexts: chemistry, historical thermodynamics.

What is a Gigajoule?

A gigajoule equals one billion joules (10⁹ J).

Common contexts: natural gas billing, large-scale energy reporting.

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FAQ

How do I convert calories to gigajoules?

Multiply by 4.1840e-9. For example, 6.8 cal × 4.1840e-9 = 0 GJ.

What is the formula for calories to gigajoules?

The formula is: GJ = cal × 4.1840e-9.

How many gigajoules are in one calorie?

One calorie equals 0 gigajoules.

How many gigajoules are in 1 calory?

1 cal equals 4.18400e-9 GJ.

How do you convert calories to gigajoules?

Multiply the calory value by 4.18400e-9. Formula: GJ = cal × 4.1840e-9.

How many gigajoules are in 5 calories?

5 cal = 2.09200e-8 GJ.

How do you convert gigajoules back to calories?

Use the inverse formula: cal = GJ ÷ 4.1840e-9. For example, 1 GJ = 239005736.137667 cal.

What is the difference between Calory and Gigajoul?

The thermochemical calorie equals exactly 4.184 joules; the historical "small" calorie raised one gram of water by one degree Celsius. A gigajoule equals one billion joules (10⁹ J).