A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
Terajoules to Kilocalories
Convert Terajoule (TJ) to Kilocalorie (kcal) instantly with an exact formula, conversion table, and FAQ.
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Convert terajoules (TJ) to kilocalories (kcal) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A kilocalorie (kcal) equals 1,000 small calories and is the unit behind the food "Calorie" shown on nutrition labels.
kcal = TJ × 239005736.1
Results update instantly for Terajoules to Kilocalories conversions.
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Formula
kcal = TJ × 239005736.1
TJ = kcal × 4.184000000e-09
Conversion table
| 1 TJ | 2.390057e+08 kcal |
| 5 TJ | 1.195029e+09 kcal |
| 10 TJ | 2.390057e+09 kcal |
| 20 TJ | 4.780115e+09 kcal |
| 50 TJ | 1.195029e+10 kcal |
| 100 TJ | 2.390057e+10 kcal |
| 500 TJ | 1.195029e+11 kcal |
| 1000 TJ | 2.390057e+11 kcal |
Related conversions
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How the formula works
Both terajoule and kilocalorie measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in terajoules by 239005736.1 to get kilocalories. To reverse the conversion, multiply a kilocalorie value by 4.184000000e-09 to get back to terajoules.
Frequently asked questions
What is Terajoule (TJ)?
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
What is Kilocalorie (kcal)?
A kilocalorie (kcal) equals 1,000 small calories and is the unit behind the food "Calorie" shown on nutrition labels.
How do I convert terajoules to kilocalories?
Multiply the terajoule value by 239005736.1 to get the equivalent in kilocalories. For example, 5 TJ × 239005736.1 = 1.195029e+09 kcal.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 239005736.1 is an exact, non-rounded value.
Can I convert kilocalories back to terajoules?
Yes. Divide the kilocalorie value by 239005736.1, or multiply it by 4.184000000e-09, to get terajoules.
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About converting terajoules to kilocalories
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix. A kilocalorie (kcal) equals 1,000 small calories and is the unit behind the food "Calorie" shown on nutrition labels.
Use this calculator to move between terajoules and kilocalories accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.