HomeEnergyKilocalories to Calories

Kilocalories to Calories Converter

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

Online Converter

Convert Kilocalorie to Calorie

1,000

Conversion Formula

cal = kcal × 1000

1 kcal in every energy unit

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

Conversion factors

1 kcal = 1,000 cal
1 cal = 0.001 kcal
cal = kcal × 1000

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.

Kilocalorie to Calorie
kcalcal
11,000
55,000
1010,000
2525,000
5050,000
100100,000
500500,000
1,0001,000,000
Calorie to Kilocalorie
calkcal
10.001
50.005
100.01
250.025
500.05
1000.1
5000.5
1,0001

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.
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