Quick answer
300 kJ = 71.702 kcal. Divide 300 by 4.184 to check: 300 ÷ 4.184 = 71.702.
How to convert 300 kJ to calories
- Start with 300 kJ.
- Divide by 4.184: 300 ÷ 4.184 = 71.702 kcal.
- For small calories, use kJ × 1,000 ÷ 4.184: that gives 71,701.7 cal.
You may also see this searched as 300 kj to cal, 300 kj to calorie or 300 kilojoules to calories. All give the same answer. The general method is explained in how to convert kJ to calories.
300 kJ in context
- 3.4% of the 8,700 kJ average-adult reference day on Australian and New Zealand labels.
- 3.6% 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
A large egg holds roughly 72 kcal, which is about 301 kJ, so 300 kJ is close to one egg.
Nearby conversions
| Kilojoules | Calories (kcal) |
|---|---|
| 200 kJ | 47.801 kcal |
| 250 kJ | 59.751 kcal |
| 300 kJ | 71.702 kcal |
| 400 kJ | 95.602 kcal |
| 500 kJ | 119.5 kcal |
Browse all popular conversions or the kJ to calories chart.
Frequently asked questions
How many calories is 300 kJ?
300 kJ is 71.702 kcal (food calories). Divide 300 by 4.184 to check.
How many small calories (cal) is 300 kJ?
300 kJ is 71,701.7 cal, since 1 kcal is 1,000 cal.
What percentage of a daily intake is 300 kJ?
About 3.4% of the 8,700 kJ reference day used in Australia and New Zealand, or about 3.6% of a 2,000 kcal reference day.
Last updated 11 Oct 2026. How we calculate.