Calorie Density Calculator
The same 200 kcal is a full plate of one food and a small handful of another. Fullness tracks volume and weight more than calories, so filling up on low-density foods first stretches the same energy much further.
Your numbers
Calories per 100 g
166.7kcal
Grams for 200 kcal
120g
Formula
Calories per 100 g = Food calories × 100 ÷ Food weight
Vegetables and broths sit under 50 kcal per 100 g, rice and bread run 130–270, and nuts and oils clear 600.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Food calories (kcal)The calories in what you ate; take it from a label or an app. | 250 | 0 and up |
| Food weight (g)The weight of the portion you are measuring. | 150 | 0 and up |
Step by step
Quick reference table
Results when only Food calories (kcal) changes and everything else stays put.
| Food calories (kcal) | Calories per 100 g (kcal) | Grams for 200 kcal (g) |
|---|---|---|
| 125 | 83.3 | 240 |
| 188 | 125.3 | 160 |
| 250 | 166.7 | 120 |
| 375 | 250 | 80 |
| 500 | 333.3 | 60 |
What each result means
| Result | At default values |
|---|---|
| Calories per 100 g (kcal)Calories in 100 g; lower means more food for the same energy. | 166.7 |
| Grams for 200 kcal (g)The grams that make 200 kcal — handy for comparing fullness. | 120 |
Common mistakes
Vegetables and broths sit under 50 kcal per 100 g, rice and bread run 130–270, and nuts and oils clear 600.
Glossary
- Food calories
- The calories in what you ate; take it from a label or an app.
- Food weight
- The weight of the portion you are measuring.
- Calories per 100 g
- Calories in 100 g; lower means more food for the same energy.
- Grams for 200 kcal
- The grams that make 200 kcal — handy for comparing fullness.
Frequently asked questions
Q. How is Calorie Density Calculator calculated?
Calories per 100 g = Food calories × 100 ÷ Food weight — The same 200 kcal is a full plate of one food and a small handful of another. Fullness tracks volume and weight more than calories, so filling up on low-density foods first stretches the same energy much further.
Q. Can you walk through an example?
With Food calories 250kcal, Food weight 150g, the answer is Calories per 100 g 166.7kcal.
Q. What do I need to enter?
Enter Food calories, Food weight. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Food calories (kcal) moves the answer to Food calories (kcal) 125 → Calories per 100 g (kcal) 83.3 and Food calories (kcal) 500 → Calories per 100 g (kcal) 333.3. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
Vegetables and broths sit under 50 kcal per 100 g, rice and bread run 130–270, and nuts and oils clear 600.
Related calculators
These calculators help you understand health figures; they do not replace diagnosis or prescription. See a clinician if you have symptoms.