Joules to Kilocalories Converter
1 joule (J) equals 0.000239005736 kilocalories (kcal).
Quick answer
- 1 joule = 0.000239005736 kilocalories
- 1 kilocalorie = 4,184 joules
- Formula: kcal = J ÷ 4,184
1 joule = 0.000239005736 kilocalories
How to convert joules to kilocalories
kcal = J ÷ 4,184
To convert joules to kilocalories, divide the number of joules by 4,184.
Example: 42 J to kcal
- Start with the value in joules: 42 J.
- Divide by 4,184: 42 ÷ 4,184 = 0.01003824092.
- Result: 42 joules = 0.01003824092 kilocalories.
Going the other way, 1 kilocalorie = 4,184 joules, so to convert kilocalories back to joules you multiply by the same number. See kilocalories to joules.
Joules to kilocalories conversion table
| Joules (J) | Kilocalories (kcal) |
|---|---|
| 0.1 J | 0.000023900574 kcal |
| 0.2 J | 0.000047801147 kcal |
| 0.3 J | 0.000071701721 kcal |
| 0.4 J | 0.000095602294 kcal |
| 0.5 J | 0.000119502868 kcal |
| 0.6 J | 0.000143403442 kcal |
| 0.7 J | 0.000167304015 kcal |
| 0.8 J | 0.000191204589 kcal |
| 0.9 J | 0.000215105163 kcal |
| 1 J | 0.000239005736 kcal |
| 1.5 J | 0.000358508604 kcal |
| 2 J | 0.000478011472 kcal |
| 2.5 J | 0.00059751434 kcal |
| 3 J | 0.000717017208 kcal |
| 3.5 J | 0.000836520077 kcal |
| 4 J | 0.000956022945 kcal |
| 4.5 J | 0.001075525813 kcal |
| 5 J | 0.001195028681 kcal |
| 6 J | 0.001434034417 kcal |
| 7 J | 0.001673040153 kcal |
| 7.5 J | 0.001792543021 kcal |
| 8 J | 0.001912045889 kcal |
| 9 J | 0.002151051625 kcal |
| 10 J | 0.002390057361 kcal |
| 11 J | 0.002629063098 kcal |
| 12 J | 0.002868068834 kcal |
| 13 J | 0.00310707457 kcal |
| 14 J | 0.003346080306 kcal |
| 15 J | 0.003585086042 kcal |
| 16 J | 0.003824091778 kcal |
| 17 J | 0.004063097514 kcal |
| 18 J | 0.00430210325 kcal |
| 19 J | 0.004541108987 kcal |
| 20 J | 0.004780114723 kcal |
| 21 J | 0.005019120459 kcal |
| 22 J | 0.005258126195 kcal |
| 23 J | 0.005497131931 kcal |
| 24 J | 0.005736137667 kcal |
| 25 J | 0.005975143403 kcal |
| 26 J | 0.00621414914 kcal |
More J to kcal values
- 27 J
- 28 J
- 29 J
- 30 J
- 31 J
- 32 J
- 33 J
- 34 J
- 35 J
- 36 J
- 37 J
- 38 J
- 39 J
- 40 J
- 41 J
- 42 J
- 43 J
- 44 J
- 45 J
- 46 J
- 47 J
- 48 J
- 49 J
- 50 J
- 51 J
- 52 J
- 53 J
- 54 J
- 55 J
- 56 J
- 57 J
- 58 J
- 59 J
- 60 J
- 61 J
- 62 J
- 63 J
- 64 J
- 65 J
- 66 J
- 67 J
- 68 J
- 69 J
- 70 J
- 71 J
- 72 J
- 73 J
- 74 J
- 75 J
- 76 J
- 77 J
- 78 J
- 79 J
- 80 J
- 81 J
- 82 J
- 83 J
- 84 J
- 85 J
- 86 J
- 87 J
- 88 J
- 89 J
- 90 J
- 91 J
- 92 J
- 93 J
- 94 J
- 95 J
- 96 J
- 97 J
- 98 J
- 99 J
- 100 J
- 110 J
- 120 J
- 130 J
- 140 J
- 150 J
- 160 J
- 170 J
- 180 J
- 190 J
- 200 J
- 210 J
- 220 J
- 230 J
- 240 J
- 250 J
- 260 J
- 270 J
- 280 J
- 290 J
- 300 J
- 310 J
- 320 J
- 330 J
- 340 J
- 350 J
- 360 J
- 370 J
- 380 J
- 390 J
- 400 J
- 410 J
- 420 J
- 430 J
- 440 J
- 450 J
- 460 J
- 470 J
- 480 J
- 490 J
- 500 J
- 600 J
- 700 J
- 800 J
- 900 J
- 1,000 J
- 1,200 J
- 1,500 J
- 2,000 J
- 2,500 J
- 3,000 J
- 4,000 J
- 5,000 J
- 10,000 J
What is a joule?
The joule is the SI unit of energy, work and heat.
What is a kilocalorie?
The kilocalorie is 1,000 calories, 4,184 joules, the energy needed to warm one kilogram of water by about 1 °C.
Convert joules to other units
Convert other units to kilocalories
- Kilowatt-hours to kilocalories
- British thermal units to kilocalories
- Calories to kilocalories
- Kilojoules to kilocalories
- Calories (food) to kilocalories
- Electronvolts to kilocalories
- Watt-hours to kilocalories
- Foot-pounds to kilocalories
- Megajoules to kilocalories
- Therms to kilocalories
- All kilocalorie conversions →
Frequently asked questions
How many kilocalories are in a joule?
One joule is 0.000239005736 kilocalories.
How many joules are in a kilocalorie?
One kilocalorie is 4,184 joules.
What is the formula to convert joules to kilocalories?
kcal = J ÷ 4,184.