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Convert kj to kcal

1 kilojoule equals 0.23900574 kilocalories. Enter a value below to convert instantly.

1 kJ
0.23900574 kcal

Multiply the number of kilojoules by 0.239005736138 to get kilocalories. How this is calculated

Copy link puts your number after the #, which browsers never send to a server — but the link itself carries it, so anyone you send it to sees the value. Save keeps the unit pair in this browser only; clear it any time from your saved list.

Need the other direction? Convert kilocalorie to kilojoule →

Formula

Multiply the number of kilojoules by 0.239005736138 to get kilocalories.

Step by step

  1. Start with 1 kJ.
  2. Multiply by the conversion factor 0.239005736138.
  3. 1 × 0.239005736138 = 0.23900574 kcal.

Kilojoules to Kilocalories conversion table

Kilojoules (kJ) Kilocalories (kcal)
1 0.23900574
2 0.47801147
5 1.1950287
10 2.3900574
20 4.7801147
50 11.950287
100 23.900574
500 119.50287
1,000 239.00574

Convert Kilojoule to other energy units

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

  • Joule J 1,000
  • Megajoule MJ 0.001
  • Gigajoule GJ 0.000001
  • Millijoule mJ 1,000,000
  • Microjoule µJ 1,000,000,000
  • Nanojoule nJ 1,000,000,000,000
  • Attojoule aJ 1e+21
  • Erg erg 10,000,000,000
  • Calorie (thermochemical) cal 239.00574
  • Kilocalorie kcal 0.23900574
  • Calorie (IT) cal(IT) 238.8459
  • Kilocalorie (IT) kcal(IT) 0.2388459
  • Megacalorie Mcal 0.00023900574
  • Watt-hour Wh 0.27777778
  • Kilowatt-hour kWh 0.00027777778
  • Megawatt-hour MWh 2.7777778e-7
  • Gigawatt-hour GWh 2.7777778e-10
  • Watt-second W·s 1,000
  • Kilowatt-second kW·s 1
  • Horsepower-hour hp·h 0.00037250614
  • British Thermal Unit BTU 0.94781712
  • BTU (thermochemical) BTU(th) 0.94845141
  • MBTU (thousand BTU) MBTU 0.00094781712
  • MMBTU (million BTU) MMBTU 9.4781712e-7
  • Therm (US) thm (US) 0.0000094804343
  • Therm (EC) thm (EC) 0.0000094781339
  • Ton-hour (refrigeration) ton·h 0.000078984761
  • Foot-pound ft·lbf 737.56215
  • Inch-pound in·lbf 8,850.7458
  • Foot-poundal ft·pdl 23,730.36
  • Kilogram-force Meter kgf·m 101.97162
  • Gram-force Centimeter gf·cm 10,197,162
  • Gram-force Meter gf·m 101,971.62
  • Kilogram-force Centimeter kgf·cm 10,197.162
  • Ounce-force Inch ozf·in 141,611.93
  • Horsepower-hour (metric) PS·h 0.00037767267
  • Electronvolt eV 6.2415091e+21
  • Kiloelectronvolt keV 6.2415091e+18
  • Megaelectronvolt MeV 6.2415091e+15
  • Gigaelectronvolt GeV 6,241,509,100,000
  • Hartree Eh 2.2937123e+20
  • Rydberg Ry 4.5874246e+20
  • Ton of TNT tTNT 2.3900574e-7
  • Kiloton of TNT ktTNT 2.3900574e-10
  • Megaton of TNT MtTNT 2.3900574e-13
  • Tonne of Oil Equivalent toe 2.388459e-8
  • Barrel of Oil Equivalent bboe 1.6345576e-7
  • Gigaton of TNT GtTNT 2.3900574e-16
  • Fuel Oil Equivalent (kiloliter) FOE (kL) 2.487709e-8
  • Fuel Oil Equivalent (US barrel) FOE (bbl) 1.5666399e-7

About the kilojoule

The kilojoule (kJ) is a SI unit of energy.

About the kilocalorie

The kilocalorie (kcal) is a Metric unit of energy. The 'Calorie' printed on nutrition labels — 1,000 thermochemical calories.

Where this conversion is used

Converting kilojoules to kilocalories comes up when nutrition labels, electricity bills, heating, and physics.

Related conversions

Frequently asked questions

How many kilocalories are in a kilojoule?

One kilojoule equals 0.23900574 kilocalories.

How do you convert kilojoules to kilocalories?

Multiply the number of kilojoules by 0.239005736138 to get kilocalories.

What is 1 kilocalorie in kilojoules?

One kilocalorie equals 4.184 kilojoules.

When would I convert kilojoules to kilocalories?

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.