BMI Calculator
Calculate your Body Mass Index and its WHO classification.
Macros and Nutrients Calculator
Calculate your macros (carbs, protein, fat) and target calories based on goal, weight and activity.
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⚠️ This calculator is for guidance only. It does not replace medical diagnosis or advice from a healthcare professional.
The macros calculator combines your energy expenditure (BMR + TDEE with Mifflin-St Jeor) with your goal (maintain, lose or gain weight) and your preferred macronutrient split to give you exact daily calories and grams of carbs, protein and fat. Includes presets: balanced (40/30/30), high protein (40/40/20), low carb (20/40/40), keto (5/25/70) and zone (40/30/30). Percentages must sum to 100%. Use it as many times as you need: it is completely free, requires no sign-up and works directly in your browser.
Frequently asked questions
¿Qué es el reparto 40/30/30?
Significa 40% de calorías de carbohidratos, 30% de proteína y 30% de grasa. Es un reparto equilibrado usado en dieta zona y nutrición deportiva general.
¿Por qué los porcentajes deben sumar 100%?
Porque representan la distribución del 100% de tus calorías objetivo entre los tres macronutrientes. Si suman más o menos, el cálculo de gramos sería incorrecto.
¿Es adecuado para keto?
Sí, usa el preset 'Keto (5/25/70)' o ajusta manualmente a ~5% carbohidratos, 20-25% proteína y 70-75% grasa.
What is the 40/30/30 split?
It means 40% of calories from carbs, 30% from protein and 30% from fat. A balanced split used in zone diet and general sports nutrition.
Why must percentages sum to 100%?
Because they represent the distribution of 100% of your target calories among the three macronutrients. If they sum to more or less, the gram calculation would be wrong.
Is it suitable for keto?
Yes, use the 'Keto (5/25/70)' preset or manually adjust to ~5% carbs, 20-25% protein and 70-75% fat.