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Kilocalories to Calories Converter

Convert kilocalories (food Calories) (kcal) to calories (thermochemical) (cal), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
1,000 cal
joules (watt-seconds)
4,184 J
kilojoules
4.184 kJ
megajoules
0.004184 MJ
gigajoules
4.184 × 10⁻⁶ GJ
megacalories
0.001 Mcal
watt-hours
1.16222222222 Wh
kilowatt-hours
0.00116222222222 kWh
megawatt-hours
1.16222222222 × 10⁻⁶ MWh
British thermal units (IT)
3.96566683139 Btu
million Btu
3.96566683139 × 10⁻⁶ MMBtu
therms (100,000 Btu)
3.96566683139 × 10⁻⁵ thm
quads (10¹⁵ Btu)
3.96566683139 × 10⁻¹⁵ quad
electronvolts
2.61144739675 × 10²² eV
kiloelectronvolts
2.61144739675 × 10¹⁹ keV
megaelectronvolts
2.61144739675 × 10¹⁶ MeV

1 kcal = 1,000 cal

Show the working
  1. 1 kcal = 1000 cal
  2. 1 × 1000 = 1000 cal

How to convert kilocalories to calories

1 kcal = 1,000 cal, so multiply by 1,000 to go from kilocalories (food Calories) to calories (thermochemical). Going the other way, 1 cal = 0.001 kcal.

cal = kcal × 1,000
kcal = cal × 0.001

Worked example:

1 kcal = 1000 cal
5 × 1000 = 5000 cal

Kilocalories to calories table

KilocaloriesCalories
1 kcal1,000 cal
2 kcal2,000 cal
3 kcal3,000 cal
4 kcal4,000 cal
5 kcal5,000 cal
6 kcal6,000 cal
7 kcal7,000 cal
8 kcal8,000 cal
9 kcal9,000 cal
10 kcal10,000 cal
15 kcal15,000 cal
20 kcal20,000 cal
25 kcal25,000 cal
30 kcal30,000 cal
40 kcal40,000 cal
50 kcal50,000 cal
75 kcal75,000 cal
100 kcal100,000 cal
250 kcal250,000 cal
500 kcal500,000 cal
1000 kcal1,000,000 cal

About the units

Kilocalories (kcal)
Kilocalories (food Calories), a specialised unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.
Calories (cal)
Calories (thermochemical), a specialised unit. The thermochemical calorie, 4.184 J, used on US food labels as 1 Calorie = 1 kilocalorie. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed