HomeEnergyKilojoules to Kilocalories

Kilojoules to Kilocalories Converter

Convert kilojoules to kilocalories with the formula, a reference table and every energy unit.

Online Converter

Convert Kilojoule to Kilocalorie

0.239006

Conversion Formula

kcal = kJ × 0.2390057361

1 kJ in every energy unit

Tap a unit to make it the target of the converter above.

Conversion factors

1 kJ = 0.239006 kcal
1 kcal = 4.184 kJ
kcal = kJ × 0.2390057361Read the full guide: Kilocalories to Kilojoules

Using this converter

How to use
  1. 1

    Enter a value

    Type a number into the From box. It starts at 1 so you can see the basic ratio straight away. Thousands separators such as 1,250.5 are accepted.

  2. 2

    Choose your units

    This page opens with its own units selected. Use either dropdown to pick any other unit in the category, or tap a unit in the all-units list to make it the target.

  3. 3

    Read the result

    The answer updates as you type and the matching formula is shown underneath. There is no Convert button to press.

  4. 4

    Swap, copy or clear

    Swap reverses the direction, Copy Result copies a line such as 1 km = 0.621371 mi, and Clear empties the input so you can start again.

Supported input formats

Input

  • Supported
    Whole numbers25
  • Supported
    Decimal numbers2.75

    Use a dot as the decimal separator.

  • Supported
    Negative numbers-40

    Calculated for every unit. Quantities such as length or weight are normally positive, while temperatures can be negative.

  • Supported
    Thousands separators1,250.5

    Commas must group digits in threes. 1,234 is read as one thousand two hundred thirty-four.

  • Supported
    Scientific notation1.5e6

    Useful for very large or very small values (1.5e6 = 1,500,000).

  • Not supported
    Comma as decimal mark2,5

    Type 2.5 instead.

  • Not supported
    Fractions1/2

    Type 0.5 instead.

  • Not supported
    Numbers with unit text5 km

    Enter only the number and choose the unit from the dropdown.

Output

Results use US English formatting (1,234.56) and show up to 6 decimal places with trailing zeros removed. Very small results appear in scientific notation, such as 9.0949e-13, instead of rounding to zero.

Units available in this converter

  • Joule (J)
  • Kilojoule (kJ)
  • Calorie (cal)
  • Kilocalorie (kcal)
  • Watt Hour (Wh)
  • Kilowatt Hour (kWh)

Quick reference tables

Common values for the units currently selected above, in both directions.

Kilojoule to Kilocalorie
kJkcal
10.239006
51.195029
102.390057
255.975143
5011.950287
10023.900574
500119.502868
1,000239.005736
Kilocalorie to Kilojoule
kcalkJ
14.184
520.92
1041.84
25104.6
50209.2
100418.4
5002,092
1,0004,184

Limitations

  • The calorie is the thermochemical calorie (4.184 J). Calories on food labels are kilocalories.
  • Energy is not power: a kilowatt-hour is different from a kilowatt. BTU and electronvolt are not supported.
  • Results show up to 6 decimal places. Values are not rounded during calculation, and a non-zero result that would display as 0 is shown in scientific notation.
ToolSquare

Need another conversion?

Explore more unit converters for everyday calculations.

Browse Converters