Convert joule (J) to kilocalorie (kcal).
EnergyOpen
Kilocalorie to Joule Converter (kcal to J)
Convert kilocalorie (kcal) to joule (J).Unit Converter · Energy
Quick answer
1 kilocalorie (kcal) is equal to 4,184 joules (J). 1 joule (J) is approximately equal to 0.00023901 kilocalories (kcal).
To convert kcal to J, multiply the value in kilocalories by 4,184. For example, 10 kcal = 41,840 J, and 100 kcal = 4,18,400 J.
Loading chart…
Quick reference — kilocalorie to joule
More in Energy
All Energy convertersConvert kilocalorie (kcal) to kilojoule (kJ).
EnergyOpenConvert kilocalorie (kcal) to calorie (cal).
EnergyOpenConvert kilocalorie (kcal) to kilowatt hour (kWh).
EnergyOpenConvert kilocalorie (kcal) to BTU (BTU).
EnergyOpenConvert kilocalorie (kcal) to electronvolt (eV).
EnergyOpenConvert kilocalorie (kcal) to watt hour (Wh).
EnergyOpenConvert kilojoule (kJ) to joule (J).
EnergyOpenConvert calorie (cal) to joule (J).
EnergyOpen
How to convert kilocalories to joules
How many joules are in a kilocalorie? 1 kilocalorie is 4,184 joules. This free kcal to J converter and kilocalorie to joule calculator gives the answer instantly for any value.
To convert kilocalorie (kcal) to joule (J), multiply the value in kilocalories by 4,184.
J = kcal × 4,184
- 1
Take the value in kilocalories
For example, 25 kcal.
- 2
Multiply by 4,184
25 × 4,184.
- 3
Read the answer in joules
25 kcal = 1,04,600 J.
Kilocalorie to Joule conversion table
Common values from 1 to 1,000 kilocalories converted to joules.
| Kilocalorie (kcal) | Joule (J) |
|---|---|
| 1 kcal | 4,184 J |
| 2 kcal | 8,368 J |
| 3 kcal | 12,552 J |
| 4 kcal | 16,736 J |
| 5 kcal | 20,920 J |
| 6 kcal | 25,104 J |
| 7 kcal | 29,288 J |
| 8 kcal | 33,472 J |
| 9 kcal | 37,656 J |
| 10 kcal | 41,840 J |
| 15 kcal | 62,760 J |
| 20 kcal | 83,680 J |
| 25 kcal | 1,04,600 J |
| Kilocalorie (kcal) | Joule (J) |
|---|---|
| 30 kcal | 1,25,520 J |
| 40 kcal | 1,67,360 J |
| 50 kcal | 2,09,200 J |
| 60 kcal | 2,51,040 J |
| 70 kcal | 2,92,880 J |
| 75 kcal | 3,13,800 J |
| 80 kcal | 3,34,720 J |
| 90 kcal | 3,76,560 J |
| 100 kcal | 4,18,400 J |
| 250 kcal | 10,46,000 J |
| 500 kcal | 20,92,000 J |
| 1,000 kcal | 41,84,000 J |
About kilocalories and joules
Kilocalorie (kcal)
A kilocalorie (kcal) is 1,000 calories, or 4,184 joules. It is the "Calorie" used on food labels and in diet and fitness tracking.
Joule (J)
The joule (J) is the SI unit of energy: the work done by a force of one newton over one meter. One watt is one joule per second.
kcal to J: common questions
- How many joules are in 1 kilocalorie?
- 1 kilocalorie (kcal) is equal to 4,184 joules (J). In short: 1 kcal = 4,184 J.
- How do I convert kilocalories to joules?
- To convert kcal to J, multiply the value in kilocalories by 4,184. For example, 5 kcal = 20,920 J.
- How do I convert joules to kilocalories?
- To convert J to kcal, divide the value in joules by 4,184. Or open the Joule to Kilocalorie converter, which does it for you.
- What is 10 kcal in J, and what is 100 kcal?
- 10 kcal = 41,840 J, and 100 kcal = 4,18,400 J. The table above lists more values from 1 to 1,000.
- Is this kcal to J converter accurate?
- Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.
Customize this calculator
Pick a look, copy the code, and this Kilocalorie to Joule calculator — with its inputs and results — runs on your own website.
Theme color
Match your brand's colors
Corner style
Sharp, soft or fully rounded
Widget width
Compact, standard or full width
Live preview
Full widthThe same inputs, result and chart as the calculator above, styled with your choices.
yoursite.com