A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
Terajoules to Calories
Convert Terajoule (TJ) to Calorie (cal) instantly with an exact formula, conversion table, and FAQ.
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Convert terajoules (TJ) to calories (cal) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A (small) calorie is a thermochemical unit of heat energy equal to 4.184 joules, historically the energy needed to raise 1 gram of water by 1°C.
cal = TJ × 239005736138
Results update instantly for Terajoules to Calories conversions.
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Formula
cal = TJ × 239005736138
TJ = cal × 4.184000000e-12
Conversion table
| 1 TJ | 2.390057e+11 cal |
| 5 TJ | 1.195029e+12 cal |
| 10 TJ | 2.390057e+12 cal |
| 20 TJ | 4.780115e+12 cal |
| 50 TJ | 1.195029e+13 cal |
| 100 TJ | 2.390057e+13 cal |
| 500 TJ | 1.195029e+14 cal |
| 1000 TJ | 2.390057e+14 cal |
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How the formula works
Both terajoule and calorie measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in terajoules by 239005736138 to get calories. To reverse the conversion, multiply a calorie value by 4.184000000e-12 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 Calorie (cal)?
A (small) calorie is a thermochemical unit of heat energy equal to 4.184 joules, historically the energy needed to raise 1 gram of water by 1°C.
How do I convert terajoules to calories?
Multiply the terajoule value by 239005736138 to get the equivalent in calories. For example, 5 TJ × 239005736138 = 1.195029e+12 cal.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 239005736138 is an exact, non-rounded value.
Can I convert calories back to terajoules?
Yes. Divide the calorie value by 239005736138, or multiply it by 4.184000000e-12, to get terajoules.
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About converting terajoules to calories
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix. A (small) calorie is a thermochemical unit of heat energy equal to 4.184 joules, historically the energy needed to raise 1 gram of water by 1°C.
Use this calculator to move between terajoules and calories accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.