Q:
# How Many Joules Are in a Calorie?

**There are 4.18 joules in a single calorie.** Both joules and calories are common measures of energy. Food is typically reported in kilocalories, which is equal to 1,000 calories.

A calorie is a unit of energy that measures how much energy is needed to increase the temperature of a single gram of water. The primary measure of energy, however, is the joule, which is equal to one newton-meter. It is the standard unit of energy in both the imperial and metric system. To convert a number of calories into joules, multiply the calories by 4.18. Similarly, a number of joules can be converted into joules by dividing by 4.18 or by multiplying by 0.239.

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Q:
## How Can I Convert KJ/h to BTU?

A: According to the Physics and Astronomy site at U.C. Irvine, one BTU is equivalent to 1055 joules and kilojoules/hr are converted to BTU/hr by dividing the ... Full Answer >Filed Under: -
Q:
## How Do You Convert Joules to Kilojoules?

A: One kilojoule is equal to 1,000 joules of expended energy. The "kilo" prefix refers to a multiple of 1,000 of whatever unit is being expressed. Hence, 1 ki... Full Answer >Filed Under: -
Q:
## How Do You Convert Joules to Volts?

A: One volt is equal to one joule/coulomb, so the number of joules in a charge is equal to a given charge's volts multiplied by the charge's coulombs. This is... Full Answer >Filed Under: -
Q:
## How Many Volts Does a Joule Equal?

A: Volts cannot be directly converted into joules. The energy in joules is equal to the voltage in volts times the electrical charge in coulombs. A coulomb is... Full Answer >Filed Under: