HesapHanem

Caloric Density of Food Calculator

Enter the calories and weight of a food to find its caloric density.

How it is calculated

The tool divides energy by weight: kcal per gram = calories ÷ weight (g) and kcal per 100 g = kcal per gram × 100. Calories are the total energy in kcal of the portion you are measuring, and weight is that same portion in grams. Weight must be above zero. The per-gram figure is shown with three decimals and the per-100 g figure with two, and the 100 g value is worked from the unrounded per-gram number, so the two lines agree exactly. The weight must be the weight of the food as measured, cooked or raw, matching how the calories were counted. Foods with a lot of water or fibre come out low and foods rich in fat come out high.

Worked example

A portion of food is 250 kcal and weighs 180 g. Per gram: 250 ÷ 180 = 1.389 kcal/g. Per 100 g: 1.3889 × 100 = 138.89 kcal/100g. That makes it a moderate-density food, far below an oil or nut butter and above most raw vegetables.

Try this example →

Common mistakes

  • Entering the weight in ounces or in a count of items. The field is grams, so a 6.35 oz serving must be entered as about 180.
  • Mixing a raw weight with calories of the cooked food, or the other way round. Cooking changes water content, so the weight and calories must describe the same state.
  • Entering the calories per 100 g and the weight of the whole package. Use matching figures: either per 100 g with 100 g, or the full package with its full calories.
  • Entering kilojoules in the calories field. kJ must be divided by 4.184 first to get kcal.
  • Including the weight of packaging, bones or shells. Use the edible weight only.

About this calculator

Caloric density expresses how much energy a food packs per unit of weight, calculated simply as calories ÷ grams, then scaled to a standard per-100-gram figure so different foods can be compared on equal footing regardless of portion size — the basis of nutrition labels in many countries, though US panels list per serving. Foods high in fat (about 9 kcal/g) sit far above foods high in water content like most vegetables (often under 1 kcal/g), even when their total calorie counts per serving look similar.

This calculator takes a food's total calories and weight and returns its density per gram and per 100 grams. Dietitians and weight-management coaches use caloric density to guide clients toward higher-volume, lower-density foods for satiety on fewer calories, and food product developers use it to compare formulations or verify label claims against a recipe.

Was this helpful?

You can pick up to 3 reactions.

Comments (1)

  • Editorial team

    Once you have the kcal per gram figure you can scale any portion yourself: portion in grams times the density. At the default 2.5 kcal per gram, 40 g of the food is 100 kcal. It is also a fair way to compare two versions of the same dish, as long as both weights are taken in the same state, raw or cooked. What foods are you comparing?

Popular calculators

Loan Calculator

Monthly payment, total interest and full amortization schedule.

Percentage Calculator

Percent change, percent of, and ratio calculations.

Discount Calculator

Calculate final price, savings, and discount amount.

BMI Calculator

Body mass index from height and weight (metric or imperial).

Age Calculator

Compute your exact age in years, months and days from a birth date.

Compound Interest Calculator

Calculate the final amount and interest earned with compounding.

All Calculators