FREE · INSTANT · ACCURATE
Convert kJ to Calories
instantly With Our KJ to Cal Calculator
For Australian food labels, MyFitnessPal & diet tracking
kJ
239.0
kcal (food Calories)
239,006
cal (small calories)
kcal = kJ ÷ 4.184 | cal = kJ × 239.006
Reference Table
kJ to Cal Conversion Table
Common kilojoules to calories conversions — for Australian food labels & daily tracking
| Kilojoules (kJ) | Calories (kcal) | Small cal | % of daily (women) | Food example |
|---|---|---|---|---|
| 100 kJ | 23.9 | 23,901 | 1.1% |
cucumber slices |
| 200 kJ | 47.8 | 47,801 | 2.3% |
small orange |
| 400 kJ | 95.6 | 95,602 | 4.6% |
Tim Tam biscuit |
| 500 kJ | 119.5 | 119,503 | 5.7% |
banana |
| 600 kJ | 143.4 | 143,404 | 6.9% |
Weet-Bix 2 biscuits |
| 800 kJ | 191.2 | 191,205 | 9.2% |
café flat white |
| 1,000 kJ Popular | 239.0 | 239,006 | 11.5% |
2 large eggs |
| 1,200 kJ Popular | 286.8 | 286,808 | 13.8% |
café breakfast |
| 1,500 kJ | 358.5 | 358,509 | 17.2% |
light lunch |
| 2,000 kJ | 478.0 | 478,011 | 23% |
standard meal |
| 3,000 kJ | 717.0 | 717,017 | 34.5% |
large restaurant meal |
| 4,000 kJ | 956.0 | 956,022 | 46% |
pizza 2–3 slices |
| 8,700 kJ AU Daily ♀ | 2,079 | 2,079,350 | 100% |
full day (women) |
| 10,500 kJ AU Daily ♂ | 2,510 | 2,509,563 | 100% |
full day (men) |
| Calories (kcal) | Kilojoules (kJ) | Joules (J) | % of daily (women) | Context |
|---|---|---|---|---|
| 50 kcal | 209 kJ | 209,200 | 2.4% | light snack |
| 100 kcal | 418 kJ | 418,400 | 4.8% | small apple |
| 200 kcal | 837 kJ | 836,800 | 9.6% | flat white |
| 300 kcal | 1,255 kJ | 1,255,200 | 14.4% | light lunch |
| 500 kcal | 2,092 kJ | 2,092,000 | 24% | standard meal |
| 1,000 kcal Popular | 4,184 kJ | 4,184,000 | 48% | half daily intake |
| 1,200 kcal | 5,021 kJ | 5,020,800 | 57.7% | diet target (F) |
| 1,500 kcal | 6,276 kJ | 6,276,000 | 72.1% | weight loss target |
| 2,000 kcal Popular | 8,368 kJ | 8,368,000 | 96.2% | AU daily ~women |
| 2,500 kcal | 10,460 kJ | 10,460,000 | ~100% | AU daily ~men |
| 3,000 kcal | 12,552 kJ | 12,552,000 | 144% | active adults |
| Kilojoules (kJ) | Kilocalories (kcal) | = Cal (food) | % of daily (women) | Example |
|---|---|---|---|---|
| 100 kJ | 23.9 kcal | 23.9 Cal | 1.1% | few cherry tomatoes |
| 500 kJ | 119.5 kcal | 119.5 Cal | 5.7% | banana |
| 1,000 kJ Popular | 239.0 kcal | 239.0 Cal | 11.5% | 2 large eggs |
| 2,000 kJ | 478.0 kcal | 478.0 Cal | 23% | standard meal |
| 4,000 kJ | 956.0 kcal | 956.0 Cal | 46% | pizza 2–3 slices |
| 8,700 kJ AU Daily ♀ | 2,079 kcal | 2,079 Cal | 100% | full day women |
| 10,500 kJ AU Daily ♂ | 2,510 kcal | 2,510 Cal | 100% | full day men |
Based on NHMRC guidelines. 1 kcal = 4.184 kJ · AU women daily = 8,700 kJ · AU men daily = 10,500 kJ
kcal = kJ ÷ 4.184How it works
How to Convert kJ to Calories
Simple formula, instant results — understand exactly what kilojoules mean on Australian food labels
Find the kJ value
Check the nutrition panel on any Australian food label — energy is always listed in kilojoules (kJ).
e.g. 1,000 kJ
Divide by 4.184
This is the fixed international conversion factor between kilojoules and kilocalories.
1,000 ÷ 4.184
Get your calories
The result is kilocalories (kcal) — the same unit shown in MyFitnessPal, Cronometer & Lose It!
= 239 kcal ✓
Conversion Formulas
kcal = kJ ÷ 4.184
Kilojoules → food Calories (kcal / Cal)
kJ = kcal × 4.184
Food Calories (kcal) → Kilojoules
cal = kJ × 239.006
Kilojoules → small calories (physics unit)
Quick reference
100 kJ
23.9 kcal
500 kJ
119.5 kcal
1,000 kJ
239.0 kcal
8,700 kJ
2,079 kcal
kJ vs kcal vs Cal vs cal
| Unit | kJ value | Used where |
|---|---|---|
| kJ (kilojoule) | 1 kJ | AU & NZ food labels |
| kcal (kilocalorie) | 4.184 kJ | Diet apps, US labels |
| Cal (food Calorie) | 4.184 kJ | Same as kcal |
| cal (small calorie) | 0.004184 kJ | Physics / chemistry |
Australian food labels — always kJ (required by FSANZ law at Woolworths, Coles, Aldi)
MyFitnessPal, Cronometer, Lose It! — use kcal (same as Cal with capital C)
European food labels — show both kJ and kcal side by side
Garmin & Polar (AU models) — sometimes display energy burned in kJ
💡 Mental shortcut
No calculator? Divide by 4
For a quick mental estimate, divide the kJ value by 4 instead of 4.184.
It’s slightly less accurate (about 4.5% off) but fast enough for
checking food labels on the go. For exact results, use the converter above.
2,000 kJ
÷ 4
≈ 500 Cal
÷ 4
≈ 500 Cal
~4.5% off exact value
Australian Foods
Everyday Aussie Foods — kJ to Cal
Real serving sizes from Woolworths, Coles & popular Australian brands
🌾
Weet-Bix (2 biscuits)
No milk
136 kcal
570 kJ
🍞
Vegemite on Toast
1 slice wholegrain
108 kcal
450 kJ
🥚
Scrambled Eggs
2 large eggs, no butter
239 kcal
1,000 kJ
🥛
Up&Go (250ml)
Chocolate flavour
217 kcal
910 kJ
🫐
Chobani Greek Yoghurt
170g, plain
139 kcal
580 kJ
🥣
Rolled Oats (dry)
½ cup / 45g
172 kcal
720 kJ
🍌
Banana (medium)
118g, peeled
105 kcal
440 kJ
🍳
Café Eggs on Toast
2 eggs, 2 slices sourdough
430 kcal
1,800 kJ
🍪
Tim Tam (Original)
1 biscuit / 18g
103 kcal
430 kJ
🥜
Sanitarium Peanut Butter
2 tbsp / 36g smooth
163 kcal
680 kJ
🫙
Shapes (BBQ)
25g serve
117 kcal
490 kJ
🍎
Apple (medium)
182g, with skin
95 kcal
397 kJ
🧀
Coon Cheddar Cheese
30g slice
121 kcal
506 kJ
🌿
Carrot sticks + hummus
80g carrots + 2 tbsp
120 kcal
502 kJ
🍫
Freddo Frog
1 frog / 15g
80 kcal
336 kJ
🥜
Roasted Almonds
30g handful
174 kcal
728 kJ
🥪
Chicken Salad Sandwich
Wholegrain, no mayo
320 kcal
1,340 kJ
🌯
Chicken Wrap (café)
Standard size
420 kcal
1,758 kJ
🥗
Garden Salad (no dressing)
200g mixed greens
40 kcal
167 kJ
🍜
Maggi 2-Minute Noodles
1 packet / 85g
356 kcal
1,490 kJ
🥫
Heinz Tomato Soup
1 can / 420g
168 kcal
703 kJ
🍱
Sushi Roll (6 pcs)
Salmon avocado
300 kcal
1,255 kJ
🍗
BBQ Chicken Breast
200g, skinless
311 kcal
1,300 kJ
🐟
Grilled Salmon
150g fillet
263 kcal
1,100 kJ
🍚
Basmati Rice (cooked)
1 cup / 180g
215 kcal
900 kJ
🥦
Steamed Broccoli
150g florets
39 kcal
165 kJ
🍝
Spaghetti Bolognese
300g serve
477 kcal
1,995 kJ
🍕
Pizza (2 slices)
Margherita, takeaway
477 kcal
1,995 kJ
🥩
Beef Steak (grilled)
200g sirloin, lean
342 kcal
1,430 kJ
🍟
Hot Chips (medium)
Takeaway serve
383 kcal
1,602 kJ
☕
Flat White (café)
Full cream milk
191 kcal
800 kJ
🫖
Black Coffee / Tea
No milk or sugar
2 kcal
8 kJ
🥛
Full Cream Milk
250ml glass
162 kcal
678 kJ
🍊
Orange Juice (fresh)
250ml glass
112 kcal
469 kJ
🥤
Coca-Cola (can)
375ml standard
159 kcal
664 kJ
💧
Sparkling Water
Any amount
0 kcal
0 kJ
🍺
Beer (mid-strength)
375ml can
117 kcal
490 kJ
🧃
Smoothie (store-bought)
450ml bottle
230 kcal
962 kJ
Values are approximate. Actual kJ varies by brand and preparation. Always check the nutrition panel on your food label.
Australian Guidelines
How Many kJ Per Day?
Recommended daily energy intake based on NHMRC Australian Dietary Guidelines
Adult Women
Moderate activity level
Adult Men
Moderate activity level
| Group | Daily kJ | Daily kcal | Notes |
|---|---|---|---|
| Adult women (moderate) | 8,700 kJ | ~2,079 kcal | NHMRC average |
| Adult men (moderate) | 10,500 kJ | ~2,510 kcal | NHMRC average |
| Women — weight loss | 6,000–7,000 kJ | 1,434–1,673 kcal | Moderate deficit |
| Men — weight loss | 7,000–8,500 kJ | 1,673–2,032 kcal | Moderate deficit |
| Active adults / athletes | 12,000–15,000 kJ | 2,868–3,585 kcal | High activity |
| Children (5–12 years) | 5,500–8,000 kJ | 1,315–1,912 kcal | Age dependent |
| Teenagers (13–17) | 8,000–11,000 kJ | 1,912–2,629 kcal | Growth stage |
| Older adults (65+) | 7,000–9,000 kJ | 1,673–2,151 kcal | Lower activity |
Source: NHMRC Australian Dietary Guidelines. Values are averages — individual needs vary. Consult an Accredited Practising Dietitian (APD) for personalised advice.
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FAQ
Frequently Asked Questions
Common questions about kJ, calories and Australian food labels
No. 1 kilojoule = 0.239 calories (kcal). They measure the same thing — food energy — but in different units. To convert: divide kJ by 4.184 to get kcal. Australian food labels always show kJ, while most diet apps use kcal.
1,000 kJ = 239 kilocalories (kcal). Formula: 1000 ÷ 4.184 = 239 kcal. This is approximately the energy in 2 large eggs, a medium banana, or a small bowl of cereal. See the full 1000 kJ to calories page for more.
The NHMRC recommends 8,700 kJ/day (~2,079 kcal) for adult women and 10,500 kJ/day (~2,510 kcal) for adult men with moderate activity. For weight loss, a common starting point is 6,000–7,000 kJ for women and 7,000–8,500 kJ for men. These are averages — individual needs vary based on height, weight, age, and activity level.
Australia adopted the metric system in the 1970s. FSANZ (Food Standards Australia New Zealand) legally requires all packaged food to display energy in kilojoules. Some manufacturers also show calories voluntarily — but kJ is always the mandatory primary unit at Woolworths, Coles, Aldi, and IGA.
Nothing — they are exactly the same unit. “Cal” with a capital C is everyday shorthand for kilocalorie (kcal). When someone says “a banana has 90 Calories,” they mean 90 kcal = 376 kJ. The lowercase “cal” (small calorie) is a physics unit — 1,000 times smaller than a food Calorie and rarely used in nutrition.
2,000 calories (kcal) = 8,368 kJ. Calculation: 2000 × 4.184 = 8,368 kJ. This is close to the Australian recommended daily intake for adult women (8,700 kJ). Use the Cal to kJ converter for any value.
Yes. Garmin, Polar, and some Fitbit models display energy burned in kJ. Use the kJ → Cal tab in the converter above — divide kJ by 4.184 to get kcal burned during exercise. The same conversion formula applies to both food and exercise energy.
8,700 kJ/day = 2,079 kcal — this is the NHMRC recommended daily intake for adult Australian women with moderate activity. It is not “a lot” — it is the standard maintenance level. For men, the recommendation is 10,500 kJ/day. Going significantly below these figures long-term is not recommended without dietitian supervision.
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