Quick answer
1,000 kJ = 239.01 kcal. Divide 1,000 by 4.184 to check: 1,000 ÷ 4.184 = 239.01.
How to convert 1000 kJ to calories
- Start with 1,000 kJ.
- Divide by 4.184: 1,000 ÷ 4.184 = 239.01 kcal.
- For small calories, use kJ × 1,000 ÷ 4.184: that gives 239,005.7 cal.
You may also see this searched as 1000 kj to cal, 1000 kj to calorie or 1000 kilojoules to calories. All give the same answer. The general method is explained in how to convert kJ to calories.
1000 kJ in context
- 11% of the 8,700 kJ average-adult reference day on Australian and New Zealand labels.
- 12% of a 2,000 kcal reference day, as used on EU and US labels.
- Reference intakes are label conventions. Your own needs depend on age, sex, size and activity. See how many kJ you should eat per day.
Good to know
1,000 kJ is exactly 1 megajoule (MJ). It is a convenient round number for quick estimates: about 239 kcal.
Nearby conversions
| Kilojoules | Calories (kcal) |
|---|---|
| 700 kJ | 167.3 kcal |
| 800 kJ | 191.2 kcal |
| 1,000 kJ | 239.01 kcal |
| 1,200 kJ | 286.81 kcal |
| 1,500 kJ | 358.51 kcal |
Browse all popular conversions or the kJ to calories chart.
Frequently asked questions
How many calories is 1000 kJ?
1000 kJ is 239.01 kcal (food calories). Divide 1000 by 4.184 to check.
How many small calories (cal) is 1000 kJ?
1000 kJ is 239,005.7 cal, since 1 kcal is 1,000 cal.
What percentage of a daily intake is 1000 kJ?
About 11% of the 8,700 kJ reference day used in Australia and New Zealand, or about 12% of a 2,000 kcal reference day.
Last updated 11 Oct 2026. How we calculate.