Kilojoules to Calories Converter
Exercise times are estimates for a 70 kg adult.
1,040 kJ is equal to 248.57 Calories (kcal). To get this, divide 1,040 by 4.184, the number of kilojoules in one kilocalorie. 1,040 kJ ÷ 4.184 = 248.57 kcal.
Seen 1,040 kJ on a pack? That per-serve figure equals 248.6 Calories, log it as 249 in a calorie-counting app.
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How To Convert 1,040 kJ To Calories
- Start with the energy in kilojoules: 1,040 kJ.
- Divide by 4.184 (1 kcal = 4.184 kJ).
- 1,040 ÷ 4.184 = 248.5660, which rounds to 248.6 Calories.
For a quick estimate, multiply by 0.24: 1,040 × 0.24 = 249.6. That’s within 0.5% of the exact 248.57 kcal, close enough for everyday tracking.
Is 1,040 kJ A Lot?
1,040 kJ, or 249 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 12% of an 8,700 kJ day.
- Brown rice, 1 cup cooked (202 g), 1,038 kJ
- California sushi roll, 6 pieces (6 pieces), 1,067 kJ
- Potato chips / crisps, small bag (45 g), 1,008 kJ
- Glazed doughnut (60 g), 1,004 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)
See the food kJ chart to find other foods near 1,040 kJ.
1,040 kJ On A Food Label
Seeing 1,040 kJ per serve on a pack means very different things depending on how big the serve is. The table shows what the same 1,040 kJ implies per 100 g, which is the fairest way to compare products.
| Serving size | kJ per 100 g | kcal per 100 g | Energy density |
|---|---|---|---|
| 40 g serve | 2,600 kJ | 621 kcal | high |
| 60 g serve | 1,733 kJ | 414 kcal | high |
| 100 g serve | 1,040 kJ | 249 kcal | medium |
| 150 g serve | 693 kJ | 166 kcal | medium |
| 250 g serve | 416 kJ | 99 kcal | low |
For example, if a 60 g serve contains 1,040 kJ, the food has about 1,733 kJ per 100 g, a high-density food, similar to biscuits, chips, chocolate, nuts and oils. Try your own label in the food label calculator.
1,040 kJ In Your Meals
Splitting a day into meals makes 1,040 kJ easier to picture. The percentages show how much of each meal budget it would take:
| Meal budget | 6,300 kJ day | 8,700 kJ day | 10,500 kJ day |
|---|---|---|---|
| Breakfast (25%) | 66% | 48% | 40% |
| Lunch (30%) | 55% | 40% | 33% |
| Dinner (35%) | 47% | 34% | 28% |
| Snacks (10%) | 165% | 120% | 99% |
How Long Does It Take To Burn 1,040 kJ?
| Activity | 60 kg person | 70 kg person | 85 kg person |
|---|---|---|---|
| Walking, moderate (5 km/h) | 1 h 8 min | 58 min | 48 min |
| Jogging (8 km/h) | 29 min | 24 min | 20 min |
| Cycling, moderate | 35 min | 30 min | 25 min |
| Swimming, moderate laps | 41 min | 35 min | 29 min |
For a 70 kg adult, burning 1,040 kJ takes roughly 58 min of walking or 24 min of jogging. The exercise kJ calculator covers 25 activities at any body weight.
1,040 kJ As Part Of Your Day
| Daily intake | Share used by 1,040 kJ |
|---|---|
| 5,021 kJ (1,200 kcal) weight-loss plan | 20.7% |
| 6,276 kJ (1,500 kcal) plan | 16.6% |
| 8,368 kJ (2,000 kcal) US/UK/EU reference | 12.4% |
| 8,700 kJ AU/NZ label reference | 12% |
| 10,460 kJ (2,500 kcal) active adult | 9.9% |
1,040 kJ In Other Energy Units
| Unit | Value |
|---|---|
| Kilojoules (kJ) | 1,040 kJ |
| Calories / kilocalories (kcal) | 248.57 kcal |
| Small calories (cal) | 248,566 cal |
| Joules (J) | 1,040,000 J |
| Megajoules (MJ) | 1.04 MJ |
| Watt-hours (Wh) | 288.9 Wh |
Nearby kJ To Calories Conversions
| Kilojoules | Calories |
|---|---|
| 1,000 kJ | 239.0 kcal |
| 1,020 kJ | 243.8 kcal |
| 1,030 kJ | 246.2 kcal |
| 1,040 kJ | 248.6 kcal |
| 1,050 kJ | 251.0 kcal |
| 1,060 kJ | 253.3 kcal |
| 1,080 kJ | 258.1 kcal |
FAQ
How many calories is 1,040 kJ?
248.57 Calories, that’s 1,040 divided by 4.184.
How many kcal is 1,040 kilojoules?
1,040 kJ is 248.57 kcal. A kilocalorie and a food Calorie are the same unit.
Is 1,040 kJ a lot?
It’s a moderate amount, a substantial snack or light meal, about 12% of an 8,700 kJ day.
How long does it take to walk off 1,040 kJ?
About 58 min of walking at 5 km/h for a 70 kg adult, or 24 min of jogging.
What if a food has 1,040 kJ per 100 g?
Then it has 248.6 kcal per 100 g, which is a medium-density food. A 30 g handful would provide about 312 kJ (75 kcal).