iloveunit

Kilocalories to Kilojoules converter

Convert kcal to kJ instantly. Type any value and get the result in kilojoules. 1 kcal = 4.184 kJ.

sponsoredTry the iloveunit app — offline conversions, gestures, no ads.
ad
Energy›kcal → kJ
From
To
result below ↓
1 kcal=
4.184kJ
formula1 kcal = 4.184 kJ

Common kilocalories → kilojoules

=4.184 kJ
=8.368 kJ
=20.92 kJ
=41.84 kJ
=83.68 kJ
=209.2 kJ
=418.4 kJ
=2,092 kJ
=4,184 kJ

Need a different value? .

Convert the other way
Kilojoules to Kilocalories

How to convert kilocalories to kilojoules

To convert kilocalories to kilojoules, multiply the value by 4.184.

Formula
kJ = kcal × 4.184

For example:

  • →5 kcal = 20.92 kJ
  • →100 kcal = 418.4 kJ

Quick reference

  • ▸1 kcal = 4.184 kJ
  • ▸1 kJ = 0.239006 kcal

When you need to convert kcal to kJ

  • ·Nutrition — converting calories to kilojoules on food labels.
  • ·Electricity bills — kWh consumption.
  • ·Heating — BTU ratings for furnaces.
  • ·Exercise — calorie burn during workouts.
  • ·Science — chemistry and physics problems.

Frequently asked

How many kilojoules are in 1 kilocalorie?
One kilocalorie equals 4.184 kilojoules.
How do I convert kcal to kJ in my head?
Multiply the value in kilocalories by 4.184 to get kilojoules.
What is the formula for kilocalories to kilojoules?
kJ = kcal × 4.184.
What is the reverse — how many kilocalories in 1 kilojoule?
One kilojoule equals 0.239006 kilocalories.

Related conversions

Kilojoules to Kilocalories
1 kJ = 0.239006 kcal
Kilocalories to Joules
1 kcal = 4,184 J
Kilocalories to Calories
1 kcal = 1,000 cal
Kilocalories to Watt-hours
1 kcal = 1.16222 Wh
Joules to Kilojoules
1 J = 0.001 kJ
Calories to Kilojoules
1 cal = 0.004184 kJ
Watt-hours to Kilojoules
1 Wh = 3.6 kJ
Kilowatt-hours to Kilojoules
1 kWh = 3,600 kJ
sponsoredTry the iloveunit app — offline conversions, gestures, no ads.
ad
All energy conversions →iloveunit · /convert/kilocalories-to-kilojoules