Kilojoules to Calories Converter
Exercise times are estimates for a 70 kg adult.
1,000 kilojoules = 239.01 kcal, or about 239 Calories. The working is a single division: 1,000 ÷ 4.184 = 239.01.
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How To Convert 1,000 kJ To Calories
- Write down the kilojoules, here, 1,000.
- Divide by the conversion factor 4.184.
- The result, 239.01 kcal, is the same as 239.01 food Calories.
Shortcut: 1,000 × 0.239 = 239 kcal. Multiplying by 0.239 is the same as dividing by 4.184 to three decimal places.
Is 1,000 kJ A Lot?
1,000 kJ, or 239 Calories, is a substantial snack or a light meal, think a muesli bar with a coffee, a bag of chips, a chocolate bar or a small sandwich. It’s around 11% of an 8,700 kJ day.
- Glazed doughnut (60 g), 1,004 kJ
- Potato chips / crisps, small bag (45 g), 1,008 kJ
- Croissant, medium (57 g), 967 kJ
- Lentils, 1 cup cooked (198 g), 962 kJ
- About 2.5 × apple, medium (397 kJ each)
- About 2.5 × banana, medium (439 kJ each)
- About 3.5 × egg, large (301 kJ each)
Values are typical, the food kJ chart lists 120+ foods.
1,000 kJ On A Food Label
A label line that reads “1,000 kJ per serve” only tells half the story. Divide by the serve size and you get the energy density, how much energy is packed into every 100 g of the food.
| Serving size | kJ per 100 g | kcal per 100 g | Energy density |
|---|---|---|---|
| 40 g serve | 2,500 kJ | 598 kcal | high |
| 60 g serve | 1,667 kJ | 398 kcal | high |
| 100 g serve | 1,000 kJ | 239 kcal | medium |
| 150 g serve | 667 kJ | 159 kcal | medium |
| 250 g serve | 400 kJ | 96 kcal | low |
For example, if a 60 g serve contains 1,000 kJ, the food has about 1,667 kJ per 100 g, a high-density food, similar to biscuits, chips, chocolate, nuts and oils. Scale any pack to your portion with the food label calculator.
1,000 kJ In Your Meals
Here’s 1,000 kJ measured against meal-sized budgets for a lighter, average and more active day:
| Meal budget | 6,300 kJ day | 8,700 kJ day | 10,500 kJ day |
|---|---|---|---|
| Breakfast (25%) | 63% | 46% | 38% |
| Lunch (30%) | 53% | 38% | 32% |
| Dinner (35%) | 45% | 33% | 27% |
| Snacks (10%) | 159% | 115% | 95% |
How Long Does It Take To Burn 1,000 kJ?
| Activity | 60 kg person | 70 kg person | 85 kg person |
|---|---|---|---|
| Walking, moderate (5 km/h) | 1 h 5 min | 56 min | 46 min |
| Jogging (8 km/h) | 27 min | 24 min | 19 min |
| Cycling, moderate | 33 min | 29 min | 24 min |
| Swimming, moderate laps | 39 min | 34 min | 28 min |
At 70 kg you’d use up 1,000 kJ in about 56 min of walking: or 24 min if you jog. Check other activities in the exercise kJ calculator.
1,000 kJ As Part Of Your Day
| Daily intake | Share used by 1,000 kJ |
|---|---|
| 5,021 kJ (1,200 kcal) weight-loss plan | 19.9% |
| 6,276 kJ (1,500 kcal) plan | 15.9% |
| 8,368 kJ (2,000 kcal) US/UK/EU reference | 12% |
| 8,700 kJ AU/NZ label reference | 11.5% |
| 10,460 kJ (2,500 kcal) active adult | 9.6% |
1,000 kJ In Other Energy Units
| Unit | Value |
|---|---|
| Kilojoules (kJ) | 1,000 kJ |
| Calories / kilocalories (kcal) | 239.01 kcal |
| Small calories (cal) | 239,006 cal |
| Joules (J) | 1,000,000 J |
| Megajoules (MJ) | 1 MJ |
| Watt-hours (Wh) | 277.8 Wh |
Nearby kJ To Calories Conversions
| Kilojoules | Calories |
|---|---|
| 900 kJ | 215.1 kcal |
| 920 kJ | 219.9 kcal |
| 950 kJ | 227.1 kcal |
| 1,000 kJ | 239.0 kcal |
| 1,020 kJ | 243.8 kcal |
| 1,030 kJ | 246.2 kcal |
| 1,040 kJ | 248.6 kcal |
FAQ
How many Calories are in 1,000 kJ?
239.01 Calories, that’s 1,000 divided by 4.184.
How many kcal is 1,000 kilojoules?
1,000 kJ is 239.01 kcal. A kilocalorie and a food Calorie are the same unit.
Is 1,000 kJ a lot?
It’s a moderate amount, a substantial snack or light meal, about 11% of an 8,700 kJ day.
How long does it take to walk off 1,000 kJ?
Roughly 56 min on foot for a 70 kg person; an 85 kg person needs about 46 min.
What if a food has 1,000 kJ per 100 g?
Then it has 239.0 kcal per 100 g, which is a medium-density food. A 30 g handful would provide about 300 kJ (72 kcal).