How to convert calories to joules
J = cal × 4.184
Multiply the value in calories by 4.184. To go the other way, divide by the same number, or multiply by 0.239006. For example, 5 cal × 4.184 = 20.92 J.
About the units
Calories (cal). The small (thermochemical) calorie, exactly 4.184 joules.
Joules (J). The SI unit of energy: the work done by a force of one newton over one meter.
Other energy conversions
Joules to Kilojoules · Joules to Calories · Joules to Kilocalories · Joules to Watt-hours · Joules to Kilowatt-hours · Joules to BTU · Joules to Therms · Joules to Electronvolts · Kilojoules to Joules · Calories to Joules · Calories to Kilojoules · Calories to Kilocalories · Calories to Watt-hours · Calories to Kilowatt-hours · Calories to BTU · Calories to Therms · Calories to Electronvolts · Kilocalories to Joules · Watt-hours to Joules · Kilowatt-hours to Joules · BTU to Joules · Therms to Joules · Electronvolts to Joules