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Convert calories to joules

1 calorie (thermochemical) equals 4.184 joules. Enter a value below to convert instantly.

1 cal
4.184 J

Multiply the number of calories (thermochemical) by 4.184 to get joules. How this is calculated

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Need the other direction? Convert joule to calorie (thermochemical) →

Formula

Multiply the number of calories (thermochemical) by 4.184 to get joules.

Step by step

  1. Start with 1 cal.
  2. Multiply by the conversion factor 4.184.
  3. 1 × 4.184 = 4.184 J.

Calories (thermochemical) to Joules conversion table

Calories (thermochemical) (cal) Joules (J)
1 4.184
2 8.368
5 20.92
10 41.84
20 83.68
50 209.2
100 418.4
500 2,092
1,000 4,184

Convert Calorie (thermochemical) to other energy units

1 cal expressed in every other energy unit on this site.

  • Joule J 4.184
  • Kilojoule kJ 0.004184
  • Megajoule MJ 0.000004184
  • Gigajoule GJ 4.184e-9
  • Millijoule mJ 4,184
  • Microjoule µJ 4,184,000
  • Nanojoule nJ 4,184,000,000
  • Attojoule aJ 4.184e+18
  • Erg erg 41,840,000
  • Kilocalorie kcal 0.001
  • Calorie (IT) cal(IT) 0.99933123
  • Kilocalorie (IT) kcal(IT) 0.00099933123
  • Megacalorie Mcal 0.000001
  • Watt-hour Wh 0.0011622222
  • Kilowatt-hour kWh 0.0000011622222
  • Megawatt-hour MWh 1.1622222e-9
  • Gigawatt-hour GWh 1.1622222e-12
  • Watt-second W·s 4.184
  • Kilowatt-second kW·s 0.004184
  • Horsepower-hour hp·h 0.0000015585657
  • British Thermal Unit BTU 0.0039656668
  • BTU (thermochemical) BTU(th) 0.0039683207
  • MBTU (thousand BTU) MBTU 0.0000039656668
  • MMBTU (million BTU) MMBTU 3.9656668e-9
  • Therm (US) thm (US) 3.9666137e-8
  • Therm (EC) thm (EC) 3.9656512e-8
  • Ton-hour (refrigeration) ton·h 3.3047224e-7
  • Foot-pound ft·lbf 3.08596
  • Inch-pound in·lbf 37.03152
  • Foot-poundal ft·pdl 99.287828
  • Kilogram-force Meter kgf·m 0.42664926
  • Gram-force Centimeter gf·cm 42,664.926
  • Gram-force Meter gf·m 426.64926
  • Kilogram-force Centimeter kgf·cm 42.664926
  • Ounce-force Inch ozf·in 592.50433
  • Horsepower-hour (metric) PS·h 0.0000015801825
  • Electronvolt eV 2.6114474e+19
  • Kiloelectronvolt keV 2.6114474e+16
  • Megaelectronvolt MeV 26,114,474,000,000
  • Gigaelectronvolt GeV 26,114,474,000
  • Hartree Eh 9.5968922e+17
  • Rydberg Ry 1.9193784e+18
  • Ton of TNT tTNT 1e-9
  • Kiloton of TNT ktTNT 1e-12
  • Megaton of TNT MtTNT 1e-15
  • Tonne of Oil Equivalent toe 9.9933123e-11
  • Barrel of Oil Equivalent bboe 6.8389891e-10
  • Gigaton of TNT GtTNT 1e-18
  • Fuel Oil Equivalent (kiloliter) FOE (kL) 1.0408574e-10
  • Fuel Oil Equivalent (US barrel) FOE (bbl) 6.5548212e-10

About the calorie (thermochemical)

The calorie (thermochemical) (cal) is a Metric unit of energy.

About the joule

The joule (J) is a SI unit of energy.

Where this conversion is used

Converting calories (thermochemical) to joules comes up when nutrition labels, electricity bills, heating, and physics.

Related conversions

Frequently asked questions

How many joules are in a calorie (thermochemical)?

One calorie (thermochemical) equals 4.184 joules.

How do you convert calories (thermochemical) to joules?

Multiply the number of calories (thermochemical) by 4.184 to get joules.

What is 1 joule in calories (thermochemical)?

One joule equals 0.23900574 calories (thermochemical).

When would I convert calories (thermochemical) to joules?

This conversion is common when nutrition labels, electricity bills, heating, and physics.

Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.