How To Convert Calories To Kilojoules

In this guide we are going to learn how to convert calories to kilojoules easily.

We also cover:

  1. Convert calories to kilojoules formula
    2. Quick reference guide
    3. Conversion calories to kilojoules table
    4. Calorie FAQs

Convert Calories To Kilojoules.

Convert Calories to Kilojoules Formula

The formula to convert Calories into Kilojoules is: 1 Calorie equals 4.184 Kilojoules.

1 Calorie multiply 4.184 Kilojoules.

Example: 10 Calories x 4.184 = 41.84 Kilojoules.

Rounded to the nearest whole number, it would be = 42 Kilojoules.

 

 

Calories to Kilojoules Quick Reference Guide

This quick reference table below gives us some common examples. (*This list is rounded to the nearest whole number.)

50 Calories = 209 Kilojoules
100 Calories = 418  Kilojoules
200 Calories = 837 Kilojoules
300 Calories = 1255  Kilojoules
400 Calories = 1674  Kilojoules
500 Calories = 2092 Kilojoules
1000 Calories = 4184 Kilojoules
1200 Calories = 5021  Kilojoules
2000 Calories = 8368 Kilojoules

 

Calories To Kilojoules Conversion Table

Below is a data table were you can quickly scan and convert calories to kilojoules. (*Rounded to the nearest whole number.)

This table is handy for quick use. Save this page to your bookmarks so you can easily reference from Calories to kilojoules.

 

Calories Kilojoules Calories Kilojoules Calories Kilojoules
1 4 201 841 401 1678
2 8 202 845 402 1682
3 13 203 849 403 1686
4 17 204 854 404 1690
5 21 205 858 405 1695
6 25 206 862 406 1699
7 29 207 866 407 1703
8 33 208 870 408 1707
9 38 209 874 409 1711
10 42 210 879 410 1715
11 46 211 883 411 1720
12 50 212 887 412 1724
13 54 213 891 413 1728
14 59 214 895 414 1732
15 63 215 900 415 1736
16 67 216 904 416 1741
17 71 217 908 417 1745
18 75 218 912 418 1749
19 79 219 916 419 1753
20 84 220 920 420 1757
21 88 221 925 421 1761
22 92 222 929 422 1766
23 96 223 933 423 1770
24 100 224 937 424 1774
25 105 225 941 425 1778
26 109 226 946 426 1782
27 113 227 950 427 1787
28 117 228 954 428 1791
29 121 229 958 429 1795
30 126 230 962 430 1799
31 130 231 967 431 1803
32 134 232 971 432 1807
33 138 233 975 433 1812
34 142 234 979 434 1816
35 146 235 983 435 1820
36 151 236 987 436 1824
37 155 237 992 437 1828
38 159 238 996 438 1833
39 163 239 1000 439 1837
40 167 240 1004 440 1841
41 172 241 1008 441 1845
42 176 242 1013 442 1849
43 180 243 1017 443 1854
44 184 244 1021 444 1858
45 188 245 1025 445 1862
46 192 246 1029 446 1866
47 197 247 1033 447 1870
48 201 248 1038 448 1874
49 205 249 1042 449 1879
50 209 250 1046 450 1883
51 213 251 1050 451 1887
52 218 252 1054 452 1891
53 222 253 1059 453 1895
54 226 254 1063 454 1900
55 230 255 1067 455 1904
56 234 256 1071 456 1908
57 238 257 1075 457 1912
58 243 258 1079 458 1916
59 247 259 1084 459 1920
60 251 260 1088 460 1925
61 255 261 1092 461 1929
62 259 262 1096 462 1933
63 264 263 1100 463 1937
64 268 264 1105 464 1941
65 272 265 1109 465 1946
66 276 266 1113 466 1950
67 280 267 1117 467 1954
68 285 268 1121 468 1958
69 289 269 1125 469 1962
70 293 270 1130 470 1966
71 297 271 1134 471 1971
72 301 272 1138 472 1975
73 305 273 1142 473 1979
74 310 274 1146 474 1983
75 314 275 1151 475 1987
76 318 276 1155 476 1992
77 322 277 1159 477 1996
78 326 278 1163 478 2000
79 331 279 1167 479 2004
80 335 280 1172 480 2008
81 339 281 1176 481 2013
82 343 282 1180 482 2017
83 347 283 1184 483 2021
84 351 284 1188 484 2025
85 356 285 1192 485 2029
86 360 286 1197 486 2033
87 364 287 1201 487 2038
88 368 288 1205 488 2042
89 372 289 1209 489 2046
90 377 290 1213 490 2050
91 381 291 1218 491 2054
92 385 292 1222 492 2059
93 389 293 1226 493 2063
94 393 294 1230 494 2067
95 397 295 1234 495 2071
96 402 296 1238 496 2075
97 406 297 1243 497 2079
98 410 298 1247 498 2084
99 414 299 1251 499 2088
100 418 300 1255 500 2092
101 423 301 1259 501 2096
102 427 302 1264 502 2100
103 431 303 1268 503 2105
104 435 304 1272 504 2109
105 439 305 1276 505 2113
106 444 306 1280 506 2117
107 448 307 1284 507 2121
108 452 308 1289 508 2125
109 456 309 1293 509 2130
110 460 310 1297 510 2134
111 464 311 1301 511 2138
112 469 312 1305 512 2142
113 473 313 1310 513 2146
114 477 314 1314 514 2151
115 481 315 1318 515 2155
116 485 316 1322 516 2159
117 490 317 1326 517 2163
118 494 318 1331 518 2167
119 498 319 1335 519 2171
120 502 320 1339 520 2176
121 506 321 1343 521 2180
122 510 322 1347 522 2184
123 515 323 1351 523 2188
124 519 324 1356 524 2192
125 523 325 1360 525 2197
126 527 326 1364 526 2201
127 531 327 1368 527 2205
128 536 328 1372 528 2209
129 540 329 1377 529 2213
130 544 330 1381 530 2218
131 548 331 1385 531 2222
132 552 332 1389 532 2226
133 556 333 1393 533 2230
134 561 334 1397 534 2234
135 565 335 1402 535 2238
136 569 336 1406 536 2243
137 573 337 1410 537 2247
138 577 338 1414 538 2251
139 582 339 1418 539 2255
140 586 340 1423 540 2259
141 590 341 1427 541 2264
142 594 342 1431 542 2268
143 598 343 1435 543 2272
144 602 344 1439 544 2276
145 607 345 1443 545 2280
146 611 346 1448 546 2284
147 615 347 1452 547 2289
148 619 348 1456 548 2293
149 623 349 1460 549 2297
150 628 350 1464 550 2301
151 632 351 1469 551 2305
152 636 352 1473 552 2310
153 640 353 1477 553 2314
154 644 354 1481 554 2318
155 649 355 1485 555 2322
156 653 356 1490 556 2326
157 657 357 1494 557 2330
158 661 358 1498 558 2335
159 665 359 1502 559 2339
160 669 360 1506 560 2343
161 674 361 1510 561 2347
162 678 362 1515 562 2351
163 682 363 1519 563 2356
164 686 364 1523 564 2360
165 690 365 1527 565 2364
166 695 366 1531 566 2368
167 699 367 1536 567 2372
168 703 368 1540 568 2377
169 707 369 1544 569 2381
170 711 370 1548 570 2385
171 715 371 1552 571 2389
172 720 372 1556 572 2393
173 724 373 1561 573 2397
174 728 374 1565 574 2402
175 732 375 1569 575 2406
176 736 376 1573 576 2410
177 741 377 1577 577 2414
178 745 378 1582 578 2418
179 749 379 1586 579 2423
180 753 380 1590 580 2427
181 757 381 1594 581 2431
182 761 382 1598 582 2435
183 766 383 1602 583 2439
184 770 384 1607 584 2443
185 774 385 1611 585 2448
186 778 386 1615 586 2452
187 782 387 1619 587 2456
188 787 388 1623 588 2460
189 791 389 1628 589 2464
190 795 390 1632 590 2469
191 799 391 1636 591 2473
192 803 392 1640 592 2477
193 808 393 1644 593 2481
194 812 394 1648 594 2485
195 816 395 1653 595 2489
196 820 396 1657 596 2494
197 824 397 1661 597 2498
198 828 398 1665 598 2502
199 833 399 1669 599 2506
200 837 400 1674 600 2510
Calories Kilojoules Calories Kilojoules Calories Kilojoules

 

 

Instruction for the conversion table above are:                                       

  1. Go down the left hand column that states “Calories”
    2. Go to the number that you want to convert from Calories to Kilojoules.
    3. When you find the number, just go across to the right hand column where it states “Kilojoules” This is your equivalent number.

The calorie converter reference table makes it easy to convert Calories to Kilojoules. If you want to convert food or supplements and you want to know the difference between Calories and Kilojoules this guide is handy.

On some food nutritional panels, Calories can also be called “Cal”.

Calories can also be referred to as kilocalories, or “Kcal” for short.

Kilojoules might also be called “kJ”.

 

Frequently Asked Questions – FAQs   

Here are some FAQ about calories, kilojoule conversions, diets and weight loss.

Convert Calories to Kilojoules Formula

What is the difference between calories and kilojoules?

They both measure energy in food.

Kilojoules is the metric equivalent of calories.

 

How to convert kilojoules to Calories?

To convert kilojoules to Calories, divide the value by 4.184

As an example:  300 kilojoules ÷ 4.184 = 71.70 Calories

This would be rounded to the nearest number, it would be = 72 Calories.

 

What is the difference between a Calorie and kcal?

Calories and kcal are the same thing, but the term is abbreviated and used interchangeably.

A Calorie is a kilocalorie, or kcal for short.

 

What is a Calorie?

A Calorie is a unit of energy. It is used to measure food energy.

A Calorie is the amount of heat needed to raise the temperature of one kilogram of water by one degree Celsius.

 

How many kilojoules is 1,200 calories?

There are 5,020.8 kilojoules in 1,200 Calories. To round it to the nearest number we have 5,021 kilojoules.

 

How many kilojoules is 1000 calories?

1,000 Calories is 4,184 kilojoules.

           

What are macronutrients?          

Macronutrients are protein, fat, and carbohydrates.

Sometime you hear the term, “macros”, or counting your macros in diets, which means the amount, or percentages of fat, protein and carbs are calculated.

Micronutrients are vitamins and minerals.

 

How many Calories in a pound of fat?

It is around 3,436 to 3,752 Calories. (Or 14,376 to 15,698 kilojoules.)

 

How many calories in fat?

For every 1 gram of fat, it contains 9 Calories.

Fat contains twice as much energy as protein or carbs.

Fat is energy dense, which is why for diets, we watch how much we eat. Otherwise the calories can add up quickly.

 

How many calories in carbs?

1 gram of carbohydrates contains 4 Calories.

 

How many calories in protein?

4 Calories are in 1 gram of protein.

 

What is a meal replacement shake?

You replace one or two normal meals with a meal replacement shake. Some brands and types of meal replacement shakes are:

  • The Lady Shake
  • Rapid Loss
  • OptiSlim
  • OptiMan
  • Fat Blaster Weight Loss Shake
  • OptiFast
  • The Man Shake
  • Fat Blaster For Men
  • Fat Blaster Keto-Fit Shake
  • Atkins Advantage Shake Mix
  • Bulk Nutrients Total Meal Replacement
  • OptiBiome
  • BioSlim
  • Musashi SLM Meal Replacement
  • Bulk Nutrients Earth Meal

The Man Shake is an example of a meal replacement shake, for information on how it works, visit – The Man Shake Guide

 

How many Calories are in a meal replacement shake?      

Depending on the brand and formula, it might range from around 93 Calories to 250 Calories.

 

What is the energy equation for weight loss?

What you eat and drink provides energy. The food energy is measured in calories, or kilojoules.

The body can basically only do two things with energy.

  1. Either it burns it
    2. Or stores it

A few ways your body burns energy is: resting, sleeping, exercising, activity like housework.

To lose weight you have to create an energy deficit.

To gain weight you have to be in an energy surplus. This excess energy is stored as fat.

 

Why do people use calories instead of kilojoules?

Calories are a smaller number so they are easier to add up and think about them in meals or snacks.

A lot of diets, or weight loss programs are based on 1200 Calorie diet, 1400 Calorie diet, 2000 Calories a day, etc.

Calories are commonly used in America, which has a large population.

The term Calories have been used for a long time, so it is harder to change.
           

How many kJ is 1800 Calories?

7,531 Kilojoules is 1,800 Calories.

 

How much is 2000 calories in kJ?

2,000 Calories is 8,368 Kilojoules.

           

How many kilojoules is 500 calories? 

2,092 Kilojoules is 500 Calories.

           

How many kilojoules are in a banana?           

There are around 439 Kilojoules (105 Calories) in a medium size banana.

 

How do you calculate calories from grams?

Grams and Calories are different forms of measurements.

Grams is a weight, in this case we are talking about weight of the food.

Calories are a unit of measurement of energy.

In one gram of protein there is 4 Calories.
In one gram of carbohydrates there are 4 Calories.
In one gram of fat there is 9 Calories.

           

Does walking reduce belly fat? 

Yes, any exercise can help burn calories. However eating, or not eating has more of a dramatic effect at losing weight then just exercise.

Exercise is great, but not eating in excess of what your body needs is an easier option for a start.

           

What exercise burns the most calories?

Skipping, sprinting, HIIT (high intensity interval training workouts), cross country skiing, kettlebell circuits, wrestling, burns a lot of calories.

 

How many calories are burned walking?

A female might burn around 100 to 200 Calories (418 to 837 kilojoules) walking for 30 minutes. The exact amount will depend on a few things such as: body composition, activity levels, fitness, weight, etc.

           

How can I reduce my stomach fat?

If you take in fewer calories than your body burns, you will lose weight. Some of this weight of body fat will also be taken off from the stomach.

Overall if you eat less and move more, this will help. Or eat less junk food, eat more healthy food and exercise, this will increase your results.

For easy practical ways to lose weight and strategies, click on – Best Weight Loss Tips And Tricks

 

How do I calculate the calories in homemade food?          

You add up the ingredients. An example is, say if you use a can of tomatoes and a bag of pasta, you total up the Calories.

For recipes with dozens of ingredients it can be a pain to work it out. But once you have recorded it, then you have it listed for next time.

Excel spreadsheets are handy for listing down Calories and recipe amounts.

If you follow someone else is recipe, then it might give you an indication of the Calories and macronutrients in it.

 

How many calories are in Quest protein bars?

There are 180 Calories to 202 Calories in a Quest bar, (765 – 847 kilojoules.) depending on flavour.

For more information and details on the nutritional values, click on – Quest Protein Bars

 

How many calories are burnt running 1 km?

Calculating Calories burnt is a bit harder than calculating calories consumed. As this depends on the person’s weight, muscle mass, how fast they are running, how fit, etc. However a person might burn around 62 Calories (259 kilojoules) when running one kilometre.

           

How much is 250 kJ in calories?          

There are 60 Calories in 250 kilojoules.

           

How can I eat more calories when not hungry?

Trying to put on weight for teenagers, footy players, weight trainers, or bodybuilders can be hard, so here are some ideas:

  • Have protein shakes
  • Add peanut butter to shakes and food
  • Add healthy fats like olive oil, nuts and avocado to your meals
  • Add protein powder to cereal
  • Select higher calorie snacks like – Best High Protein Bars
  • Chose bigger portions
  • Try to fit snacks between meals

 

How many kilojoules is a cup of milk?

625 kilojoules or 149 Calories are in a cup of milk, depending on if it is normal or low fat milk.

Skim milk has around 370 kilojoules (90 Calories) per cup, depending on brand.

 

How many kilojoules does honey have?

A tablespoon of honey has 267 kilojoules. (64 Calories.)

 

Do eating bananas cause belly fat?

It isn’t the bananas but the overall calories you eat will determine if you put on weight, or lose it.

(Then depending on genetics and gender, where that excess energy will be stored. Such as men generally store most of the fat around their belly.)

Bananas are a healthy choice and like everything, eat in moderation. Bananas can be worked in with a weight loss plan.

           

What is the difference between kilojoules and kJ?

They are the same, just an abbreviation.

 

What snacks are 100 calories? 

Some snacks that are under and around 100 Calories (418 kilojoules) are:

  • Greek yogurt low fat. (Chobani Plain 0.5% Fat 170g) – 99 Calories. (414 Kilojoules.)
  • Carrot sticks. – 1 cup. – 52 Calories. (220 Kilojoules.)
  • Capsicum (Bell peppers) (medium) – 31 Calories. (129 Kilojoules.)
  • Almonds (10.) – 69 Calories. (290 Kilojoules.)
  • Celery (stalk) – 9 Calories. (36 Kilojoules.)
  • Hommus dip 20g (Obela Hommus Smooth Classic 220g) – 53 Calories. (220 Kilojoules.)
  • Chick Peas 75g (Edgell Chickpeas 400g) – 102 Calories. (428 Kilojoules.)
  • Green beans (Snap, string) 1 cup – 44 Calories. (183 Kilojoules.)
  • Skim milk. (Woolworths Australian Skim Milk 250ml. 1 cup.) – 85 Calories. (354 Kilojoules.)
  • – 1/2 cup. – 42 Calories. (176 Kilojoules.)
  • – 1 cup. – 49 Calories. (205 Kilojoules.)
  • Protein bars (Aussie Bodies Lo Carb Almond Caramel 30g.) – 101 Calories. (421 Kilojoules.)
  • – 1 cup. – 64 Calories. (268 Kilojoules.)
  • Boiled egg. – 77 Calories. (322 Kilojoules.)

For a list of over 50 snack and healthy snack ideas, click on – 100 Calorie Snack Ideas

           

How many calories are in a protein bar?

Most protein bars are roughly around 200 Calories (837 kilojoules) in them. The calories might range from a low 81 Calories, (340 kilojoules) to a high 394 Calories (1650 kilojoules) depending on brand type, size and formula of the bar.

As an example a low calorie bar designed for weight loss, will have less calories than a bar formulated for high energy athletes, sportsman and bodybuilders.

For a list of over 259 protein bars, click on – Best Low Calorie Protein Bars

 

How many calories are in a Big Mac?

According to the nutritional information from McDonalds Australia, there are 564 Calories (2360 kilojoules) in a Big Mac.

In America there are 550 Calories (2301 kilojoules) in a Big Mac.

 

Why does Australia use kilojoules?

It is the metric equivalent, like comparing miles to kilometres.

Kilojoules can also be a more precise measurement.

It’s a shame that more manufacturers don’t have both energy values listed on nutritional panels of the food packaging. As calories is still quite popular in weight loss plans, fitness, supplements and bodybuilding industries.

As an example: A 1,200 Calorie weight loss diet is popular, but a 5,021 kilojoule diet is not commonly heard of, even though they are the same.

           

Conclusion

To convert Calories to kilojoules, multiply the number of Calories by 4.184

Round up or down to the nearest whole number.

To convert kilojoules to Calories, divide the value by 4.184

Bookmark this page for easy reference guide to convert Calories to kilojoules.

 

Resources and further reading

Better Health Channel

Nutrition Australia

Healthline

The Muscle and Strength Nutrition Pyramid. By Eric Helms.

Fat Loss Forever, How To Lose Fat and Keep It Off. By Peter Baker and Layne Norton PH.D

The Renaissance Diet, A Scientific Approach to Getting Leaner and Building Muscle. By Dr. Mike Israetel, with Dr. Jen Case and Dr. James Hoffman.

Specialist in Fitness Nutrition. John Berardi, PH.D and Ryan Andrews, MS/MA, RD.

USDA

Burn The Fat Feed The Muscle. By Tom Venuto

McDonalds Australia

McDonalds US