Calculadora de Grasa Corporal

Calcula tu porcentaje de grasa corporal usando el método de la Marina de EE.UU. o la fórmula basada en IMC. Soporta unidades métricas e imperiales.

Método de Cálculo
Género

Categorías de Grasa Corporal

Hombres

%
Grasa Esencial2-5%
Atlético6-13%
Fitness14-17%
Promedio18-24%
Obeso25%+

Mujeres

%
Grasa Esencial10-13%
Atlético14-20%
Fitness21-24%
Promedio25-31%
Obeso32%+

Acerca de la Calculadora

La calculadora de grasa corporal estima tu porcentaje de grasa usando fórmulas científicamente validadas. El método de la Marina de EE.UU. utiliza medidas de circunferencia y es uno de los métodos de campo más precisos. El método IMC proporciona una alternativa más simple.

Características

How to Use the Body Fat Calculator

  1. Select your preferred calculation method: U.S. Navy Method (uses circumference measurements) or BMI Method (uses height and weight only).
  2. Choose your gender — the calculator uses gender-specific formulas and reference categories for accurate results.
  3. Enter your body measurements: neck, waist, and hip (women) circumference for the Navy method, or just height and weight for the BMI method.
  4. Select your preferred unit system — Metric (cm, kg) or Imperial (in, lbs). The calculator automatically converts between them.
  5. Click the Calculate Body Fat button to process your inputs and generate an accurate body fat percentage estimate.
  6. Review your results including body fat percentage, category (Essential, Athletic, Fitness, Average, or Obese), fat mass, and lean mass estimates.

Common Use Cases

Preguntas Frecuentes

¿Qué es un porcentaje de grasa saludable?

Para hombres, un rango saludable es típicamente 10-20%. Para mujeres, es 20-30%. Los niveles esenciales son 2-5% para hombres y 10-13% para mujeres.

¿Qué tan preciso es el método de la Marina?

El método de la Marina de EE.UU. tiene una precisión de aproximadamente ±3% cuando las medidas se toman correctamente. Es más preciso que el IMC para personas atléticas.

¿Por qué las mujeres tienen más grasa corporal?

Las mujeres naturalmente llevan más grasa esencial para funciones biológicas incluyendo regulación hormonal y reproducción. La grasa esencial para mujeres es 10-13% versus 2-5% para hombres.

¿Puedo usar esto para niños o adolescentes?

Estas fórmulas están diseñadas para adultos (18+). Para menores, consulte un pediatra para una evaluación adecuada.

What is the best time to measure body fat?

For the most consistent results, measure body fat in the morning after using the bathroom and before eating or drinking. Circumference measurements can fluctuate throughout the day due to hydration, food intake, and bloating. Taking measurements at the same time each day provides the most reliable comparison data.

What is the difference between body fat percentage and BMI?

BMI (Body Mass Index) only considers height and weight, making it unable to distinguish between muscle and fat. Body fat percentage directly measures the proportion of fat in your body, making it a much more accurate indicator of health and fitness. An athlete with high muscle mass may have a high BMI but a healthy body fat percentage.

What factors affect the accuracy of body fat calculations?

Accuracy depends on measurement consistency, time of day, hydration levels, and proper technique. The Navy method requires accurate circumference measurements with a flexible tape at specific anatomical landmarks. The BMI method is less accurate for athletic individuals due to its inability to account for muscle mass. For the most precise results, use DEXA scans or hydrostatic weighing.

How often should I track my body fat percentage?

Measure once every 2-4 weeks for meaningful trends. Daily fluctuations are normal and not indicative of real progress. Track consistently at the same time of day, use the same measurement method, and focus on long-term trends rather than single measurements. Combine with progress photos, strength metrics, and how your clothes fit for a complete picture.

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