A kilocalorie (kcal) equals 1,000 small calories and is the unit behind the food "Calorie" shown on nutrition labels.
Kilocalories to Ergs
Convert Kilocalorie (kcal) to Erg (erg) instantly with an exact formula, conversion table, and FAQ.
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Convert kilocalories (kcal) to ergs (erg) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
erg = kcal × 41840000000
Results update instantly for Kilocalories to Ergs conversions.
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Formula
erg = kcal × 41840000000
kcal = erg × 2.390057361e-11
Conversion table
| 1 kcal | 4.184000e+10 erg |
| 5 kcal | 2.092000e+11 erg |
| 10 kcal | 4.184000e+11 erg |
| 20 kcal | 8.368000e+11 erg |
| 50 kcal | 2.092000e+12 erg |
| 100 kcal | 4.184000e+12 erg |
| 500 kcal | 2.092000e+13 erg |
| 1000 kcal | 4.184000e+13 erg |
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How the formula works
Both kilocalorie and erg measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in kilocalories by 41840000000 to get ergs. To reverse the conversion, multiply a erg value by 2.390057361e-11 to get back to kilocalories.
Frequently asked questions
What is Kilocalorie (kcal)?
A kilocalorie (kcal) equals 1,000 small calories and is the unit behind the food "Calorie" shown on nutrition labels.
What is Erg (erg)?
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
How do I convert kilocalories to ergs?
Multiply the kilocalorie value by 41840000000 to get the equivalent in ergs. For example, 5 kcal × 41840000000 = 2.092000e+11 erg.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 41840000000 is an exact, non-rounded value.
Can I convert ergs back to kilocalories?
Yes. Divide the erg value by 41840000000, or multiply it by 2.390057361e-11, to get kilocalories.
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About converting kilocalories to ergs
A kilocalorie (kcal) equals 1,000 small calories and is the unit behind the food "Calorie" shown on nutrition labels. An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
Use this calculator to move between kilocalories and ergs accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.