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Explore and compare food records, measurements per 100 g and recorded sources. Data coverage and preparation vary by food.

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  3. /Macro to calorie converter
These tools provide general information and approximate model outputs. Results are not diagnoses, treatment, medication/supplement doses or personal diet plans. Review your health conditions, medicines and individual needs with a health professional.
Macro to Calorie Converter

Macro to Calorie Converter

Turn grams you already have into energy. The Macro Calculator does the reverse: calories to grams.

Calculation values

Result

Enter the values and press Calculate. Numbers outside the allowed range produce no result.

How is it calculated?

The total is the sum of the three. Each percentage is that macro's share of the total.

Protein 4 kcal/g · Carbohydrate 4 kcal/g · Fat 9 kcal/g

Reference table

MacroEnergy in 10 g
Protein or carbs40 kcal
Fat90 kcal

How should you read the result?

Alcohol at 7 kcal/g is not included, and fiber energy is not removed. Label calories can differ by a few kcal because of rounding.

Frequently asked questions

How many calories in 1 g of protein?

4 kcal.

How many calories in 1 g of fat?

9 kcal.

Why might percentages not reach 100?

Rounding can show 99 or 101. If the grams are right, the energy is right.

How do I go from calories to grams?

Enter daily calories and a split in the Macro Calculator.

Sources

  • Atwater general factors: 4, 4 and 9 kcal/g

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