# Calories to Kilojoules Converter

## Energy Conversion - Convert Calorie to Joule (kcal to kJ) or Joules to Calorie (kj to kcal)

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Calorie - Energy Converter

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## How to Convert Calories to Joules and Joules to Calories

• To convert Calories to Joules (kJ)/Energy, multiply given Calorie value by 4.184

• kJ = 4.184 * kcal

For example, 3500 Calories = 3500 x 4.184 = 14,644.0 kiloJoules

• To convert Energy or Joules to Calorie, divide by 4.184

• kcal = kJ / 4.184

For Example, to find out how much calories are in 1500 Joules of energy, kcal = 1500/4.184 = 358.5 kcal

## Converting Calories to Energy

This section shows relation between cal, kcal, joule and kJoule. Both cal and joule are units of energy.

Remember, a kilo calorie (kcal) is 1000 times of calories (small c)

A kilo calorie is same as Calorie (capital C)

A kilo Joule (kJ) is 1000 joules

kcal to kjoules (kcal to kj)

1 kcal = 4.184 kj

kcal to joules (kcal to j)

1 kcal = 4184 joules

cal to joule ( cal to j)

1 cal = 4.184 joules

cal to kjoule (cal to kj)

1 cal = 4.184 kjoules

kjoules to kilo calories (kj to kcal)

1 kj = 0.239 kcal

kjoules to cal ( kj to cal)

1 kj = 239 cal

joule to kcal (J to kcal)

1 j = 0.00239 kcal

joules to calories (J to calories)

1 j = 0.239 cal

## What are Kilo joules and Calories?

• A Joule is a SI unit of energy and is defined as the force on an object to move it by 1 meter with 1 newton force
• A Kilo Joule, abbreviated as kJ, is equal to 1000 times joule (1 kJ = 1000 joules)
• A calorie is also unit of energy but it is not the SI unit. It is defined as the amount of energy needed to raise the temperature of 1 gm of water by 1 degree Celsius.
• A Food Calorie is the energy contained in food. It is measured in terms of kilo calories (1000 cal)
• One Calorie (kcal) is equal to 4.184 kilojoules.
• Calories are mainly used in Food Specification. They are also used to indicate Energy Spent or Burned during Physical Activities such as Swimming, Running, Weight Lifting. They are expressed in terms of kcal / min
• Joules is used along with a corresponding preferred unit such as kWh, btu, hp, eV, Newton-meter for measuring Electrical Energy, Mechanical Energy, Thermal Energy, Gravitational Energy, Solar Energy and Chemical Energy

## Why do we need Calorie to Joules Converter?

• While both Joule and Calorie are units of energy, Joule is the International Standard. However, Calories continues to be the preferred unit in certain areas such as Food/Nutrition, Heat and Chemical Processes.
• The usage also varies between different countries. Some countries use only Joule as the standard measure of energy. Other countries use a mix of both depending on the application.
• The Cal to Joule conversion tools are needed for easy comparison and benchmarking between applications and groups that use these energy units interchangeably. Nutrition and Medical professionals prefer Calories whereas Engineers and Scientists use Joules which is the SI unit.

## Calories to Kilojoules Conversion Table

Calorie (C) (kcal) calorie (cal) Joules (J) KiloJoules (kJ)
1 kcal 1000 cal 4184 J 4.2 kJ
2 kcal 2000 cal 8373 J 8.4 kJ
3 kcal 3000 cal 12560.4 J 12.56 kJ
4 kcal 4000 cal 16747.2 J 16.7472 kJ
5 kcal 5000 cal 20934 J 20.934 kJ
6 kcal 6000 cal 25120.8 J 25.1208 kJ
7 kcal 7000 cal 29307.6 J 29.3076 kJ
8 kcal 8000 cal 33494.4 J 33.4944 kJ
9 kcal 9000 cal 37681.2 J 37.6812 kJ
10 kcal 10000 cal 41868 J 41.868 kJ
11 kcal 11000 cal 46054.8 J 46.0548 kJ
12 kcal 12000 cal 50241.6 J 50.2416 kJ
13 kcal 13000 cal 54428.4 J 54.4284 kJ
14 kcal 14000 cal 58615.2 J 58.6152 kJ
15 kcal 15000 cal 62802 J 62.802 kJ
16 kcal 16000 cal 66988.8 J 66.9888 kJ
17 kcal 17000 cal 71175.6 J 66.9888 kJ
20 kcal 20000 cal 83736 J 83.736 kJ
21 kcal 21000 cal 87922.8 J 87.9228 kJ
22 kcal 22000 cal 92109.6 J 92.1096 kJ
23 kcal 23000 cal 96296.4 J 96.2964 kJ
24 kcal 24000 cal 100483.2 J 100.4832 kJ
25 kcal 25000 cal 10467 J 104.67 kJ
26 kcal 26000 cal 108856.8 J 108.8568 kJ
27 kcal 27000 cal 113043.6 J 113.0436 kJ
29 kcal 29000 cal 121417.2 J 121.4172 kJ
32 kcal 32000 cal 133977.6 J 133.9776 kJ
33 kcal 33000 cal 138164.4 J 138.1644 kJ
34 kcal 34000 cal 142351.2 J 142.3512 kJ
35 kcal 35000 cal 146538 J 146.538 kJ
37 kcal 37000 cal 154911.6 J 154.9116 kJ
40 kcal 40000 cal 167472 J 167.472 kJ
42 kcal 42000 cal 175845.6 J 175.8456 kJ
43 kcal 43000 cal 180032.4 J 180.0324 kJ
44 kcal 44000 cal 184219.2 J 184.2192 kJ
45 kcal 45000 cal 188406 J 188.406 kJ
53 kcal 53000 cal 221900.4 J 221.9004 kJ
54 kcal 54000 cal 226087.2 J 226.0872 kJ
55 kcal 55000 cal 230274 J 230.274 kJ
57 kcal 57000 cal 238647.6 J 238.6476 kJ
60 kcal 60000 cal 251208 J 251.208 kJ
62 kcal 62000 cal 259581.6 J 259.5816 kJ
63 kcal 63000 cal 263768.4 J 263.7684 kJ
67 kcal 67000 cal 280515.6 J 280.5156 kJ
70 kcal 70000 cal 293076 J 293.076 kJ
72 kcal 72000 cal 301449.6 J 301.4496 kJ
76 kcal 76000 cal 318196.8 J 318.1968 kJ
81 kcal 81000 cal 339130.8 J 339.1308 kJ
82 kcal 82000 cal 343317.6 J 343.3176 kJ
107 kcal 107000 cal 447987.6 J 447.9876 kJ
109 kcal 109000 cal 456361.2 J 456.3612 kJ
110 kcal 110000 cal 460548 J 460.548 kJ
112 kcal 112000 cal 468921.6 J 468.9216 kJ
119 kcal 119000 cal 498229.2 J 498.2292 kJ
123 kcal 123000 cal 514976.4 J 514.9764 kJ
124 kcal 124000 cal 519163.2 J 519.1632 kJ
144 kcal 144000 cal 602899.2 J 602.8992 kJ
168 kcal 168000 cal 703382.4 J 703.3824 kJ
172 kcal 172000 cal 720129.6 J 720.1296 kJ
179 kcal 179000 cal 749437.2 J 749.4372 kJ
186 kcal 186000 cal 778744.8 J 778.7448 kJ
200 kcal 200000 cal 837360 J 837.360 kJ
234 kcal 234000 cal 979711.2 J 979.7112 kJ
236 kcal 236000 cal 988084.8 J 988.0848 kJ
255 kcal 255000 cal 1067634 J 1067.634 kJ
257 kcal 257000 cal 1076007.6 J 1076.0076 kJ
264 kcal 264000 cal 1105315.2 J 1105.3152 kJ
269 kcal 269000 cal 1126249.2 J 1126.2492 kJ
273 kcal 273000 cal 1142996.4 J 1142.9964 kJ
280 kcal 280000 cal 1172304 J 1172.304 kJ
287 kcal 287000 cal 1201611.6 J 1201.6116 kJ
293 kcal 293000 cal 1226732.4 J 1226.7324 kJ
296 kcal 296000 cal 1239292.8 J 1239.2928 kJ
299 kcal 299000 cal 1251853.2 J 1251.8532 kJ
304 kcal 304000 cal 1272787.2 J 1272.7872 kJ
315 kcal 315000 cal 1318842 J 1318.842 kJ
320 kcal 320000 cal 1339776 J 1339.776 kJ
325 kcal 325000 cal 1360710 J 1360.710 kJ
328 kcal 328000 cal 1373270.4 J 1373.2704 kJ
329 kcal 329000 cal 1377457.2 J 1377.4572 kJ
331 kcal 3310000 cal 1385830.8 J 1385.8308 kJ
332 kcal 332000 cal 1390017.6 J 1390.0176 kJ
333 kcal 333000 cal 1394204.4 J 1394.2044 kJ
334 kcal 334000 cal 1398391.2 J 1398.3912 kJ
345 kcal 345000 cal 1444446 J 1444.446 kJ
347 kcal 347000 cal 1452819.6 J 1452.8196 kJ
352 kcal 352000 cal 1473753.6 J 1473.7536 kJ
354 kcal 354000 cal 1482127.2 J 1482.1272 kJ
381 kcal 381000 cal 1595170.8 J 1595.1708 kJ
383 kcal 383000 cal 1603544.4 J 1603.5444 kJ
422 kcal 422000 cal 1766829.6 J 1766.8296 kJ
443 kcal 443000 cal 1854752.4 J 1854.7524 kJ
463 kcal 463000 cal 1938488.4 J 1938.4884 kJ
486 kcal 486000 cal 2034784.8 J 2034.7848 kJ
520 kcal 520000 cal 2177136 J 2177.136 kJ
534 kcal 534000 cal 2235751.2 J 2235.7512 kJ
539 kcal 539000 cal 2256685.2 J 2256.6852 kJ
582 kcal 582000 cal 2436717.6 J 2436.7176 kJ
586 kcal 586000 cal 2453464.8 J 2453.4648 kJ
594 kcal 594000 cal 2486959.2 J 2486.9592 kJ
609 kcal 609000 cal 2549761.2 J 2549.7612 kJ
624 kcal 624000 cal 2612563.2 J 2612.5632 kJ
671 kcal 671000 cal 2809342.8 J 2809.3428 kJ

## Kilojoules to Calories Conversion Table

Joules (kJ) Calorie (kcal)
1 kJ 0.239006 kcal
6 kJ 1.434036 kcal
8 kJ 1.912048 kcal
100 kJ 23.9006 kcal
144 kJ 34.416864 kcal
159 kJ 38.001954 kcal
168 kJ 40.153008 kcal
185 kJ 44.21611 kcal
200 kJ 47.8012 kcal
263 kJ 62.858578 kcal
276 kJ 65.965656 kcal
361 kJ 86.281166 kcal
392 kJ 93.690352 kcal
397 kJ 94.885382 kcal
450 kJ 107.5527 kcal
455 kJ 108.74773 kcal
500 kJ 119.503 kcal
506 kJ 120.937036 kcal
508 kJ 121.415048 kcal
520 kJ 124.28312 kcal
534 kJ 127.629204 kcal
540 kJ 129.06324 kcal
545 kJ 130.25827 kcal
555 kJ 132.64833 kcal
570 kJ 136.23342 kcal
588 kJ 140.535528 kcal
600 kJ 143.4036 kcal
620 kJ 148.18372 kcal
640 kJ 152.96384 kcal
650 kJ 155.3539 kcal
665 kJ 158.93899 kcal
680 kJ 162.52408 kcal
700 kJ 167.3042 kcal
710 kJ 169.69426 kcal
760 kJ 181.64456 kcal
800 kJ 191.2048 kcal
870 kJ 207.93522 kcal
900 kJ 215.1054 kcal
1000 kJ 239.006 kcal
1200 kJ 286.8072 kcal
1250 kJ 298.7575 kcal
1400 kJ 334.6084 kcal
1460 kJ 348.94876 kcal
1500 kJ 358.509 kcal
1530 kJ 365.67918 kcal
1550 kJ 370.4593 kcal
1600 kJ 382.4096 kcal
1700 kJ 406.3102 kcal
1750 kJ 418.2605 kcal
1800 kJ 430.2108 kcal
1910 kJ 456.50146 kcal
2000 kJ 478.012 kcal
2100 kJ 501.9126 kcal
2200 kJ 525.8132 kcal
2500 kJ 597.515 kcal
3000 kJ 717.018 kcal
3400 kJ 812.6204 kcal
3500 kJ 836.521 kcal
4000 kJ 956.024 kcal
5000 kJ 1195.03 kcal
6000 kJ 1434.036 kcal
7000 kJ 1673.042 kcal
8000 kJ 1912.048 kcal

## FAQ on Calorie to Joules and Joules to Calories Calculator

• As per standard definition, it is the amount of energy required to raise the temperature of 1 gram (ml) of water by 1 degree Celsius.
This is also called as the 'thermochemical calorie'. 1 calorie = 4.184 Joule.
1 Kilocalorie (C) = 4.184 Kjoule

• It is the System International Unit (SI) unit of energy and named after Joule.
To raise the temperature of 1 g of water by 1 degree celsius needs almost 4000 Joules of energy.

• It is measured by taking the difference in temperature divided by mass of water.

• Both are units of energy. The system international unit of energy is Joule.
Energy is defined as the ability to do work. The only difference is the value they represent for measuring energy.
1 Calorie (kcal) = 4.184 kilo joules. The Big 'C' in Calorie is same as kilo calorie.
1 kilo calorie (kcal) = 1000 calories. 1 C (capital C) = 1000 calories = 1 kcal.

• calorie is bigger than joule. 4.18 joules make 1 calorie. (thermochemical calorie). 1 Calorie (kcal)= 4184 joules

• All Nutritional calories are in Kilo calories. All food items and beverages use Kilocalorie by default and specify it as 'Calorie' with a Capital 'C'.
Diet / Nutrition Calorie are all Kilocalories (1000 calorie).
Calories 100 in food items means 100 kilo calories. 1 C = 1000 calories = 4.148 kJoules

• If we assume a cup is 250 ml capacity. To raise 1 ml by 1 degree takes 1 calorie of energy.
To raise 250 ml by 1 degree will take 250 calories.
To raise 250ml by 70 degrees (30 degree to 100 degree) will need 17500 calories or 84700kJ.

• 1 kcal = 1000 calories = 0.129598 kg. 1 kg = 7700 calories.

• This measure is called BMR and it is the energy requirement (in terms of calories) at rest to maintain basic functions of the body.
The average BMR is about 1409 kcal (5900 kJ) for a woman and about 1696 kcal (7100 kJ) for a man.

• See BMR for more details.

• Nutrition calorie is 1000 times the thermochemical calorie and indicated by 'C' . 1 C = 1000 cal = 1 Kilocal = 4.184 kJoules

• 1000 calories in 1 food/nutrition calorie

• 100000 calories

• 140 Calories (kcal) = 140000 cal (thermal cal) . 0 Calories in diet coke