Calculadora de Gorduras
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
g = (kcal × %) / 9
About this calculator
The Fat Calculator is a practical tool for those who want to control fat intake in their diet. It calculates how many grams of fat are needed to achieve a certain percentage of calories from fat, considering that each gram of fat provides 9 kcal. Simply enter the total daily calories and the desired fat percentage, and the calculator automatically performs the conversion.
The operation is simple: the formula used is g = (kcal × %) / 9. For example, if you consume 2000 kcal per day and want 30% of those calories to come from fat, the calculation is (2000 × 0.30) / 9, resulting in approximately 66.7 grams of fat. This helps in planning balanced meals, especially in diets like low-carb or ketogenic, where macronutrient control is essential.
This calculator is useful for nutritionists, athletes, and anyone wanting to monitor fat intake. It can be used to adjust diets for weight loss, muscle gain, or maintenance. However, it's important to remember that not all fats are equal; prefer healthy sources like avocado, olive oil, nuts, and fish, avoiding trans fats and excessive saturated fats.
Cautions: the result is an estimate and does not replace professional guidance. The ideal fat percentage varies according to goals and health conditions. Consult a nutritionist to adjust amounts to your specific needs. Also, note that the calculator only considers fats, not other macronutrients like proteins and carbohydrates.
Frequently asked questions
How do I use the fat calculator?
Enter your total daily calories and the desired fat percentage. The calculator will show how many grams of fat correspond to that percentage.
What formula is used?
The formula is: grams of fat = (total calories × fat percentage) / 9, since each gram of fat has 9 kcal.
Is this calculator useful for ketogenic diets?
Yes, it is very useful for ketogenic diets, which typically require a high fat percentage (70-80% of calories).
Can I use it for any type of fat?
Yes, the calculation is generic. But it is important to choose healthy fats, like unsaturated ones, and avoid trans fats.
Does the result replace a consultation with a nutritionist?
No. The calculator provides an estimate, but individual needs vary. Consult a professional for a personalized diet.