Body Fat Calculator
US Navy Method & BMI-Based Body Fat Estimation
Enter your body measurements to calculate body fat percentage, fat mass, lean mass, and fitness category.
📏 What is Body Fat Percentage?
Body Fat Percentage is the proportion of fat in your total body weight. It is a more accurate health indicator than BMI, as two people with the same weight can have very different health profiles depending on their muscle-to-fat ratio.
📝 How to Use
- Select your gender
- Enter your height (cm) and weight (kg)
- Choose calculation method (Navy or BMI)
- For Navy method, enter neck, waist, hip (women) circumference
- Click calculate to see results
💡 Tips for Accurate Measurement
- Measure in the morning on an empty stomach
- Keep the tape snug but do not compress the skin
- Neck: measure at the narrowest point below the larynx
- Waist: measure at navel level horizontally
- Hip: measure at the widest part of the buttocks
❓ Preguntas Frecuentes
BMI only uses height and weight and cannot account for muscle mass. Body fat percentage measures actual fat proportion, making it a more accurate health indicator.
The US Navy method is accurate within about 3-4% compared to DEXA scans. It is the most reliable method you can do at home with a tape measure.
For men, 10-20% is healthy; for women, 18-28%. Athletes typically maintain 6-13% (men) or 14-20% (women).
📚 Guía local de cálculo
Lógica de fórmula
Se aplican fórmulas públicas de finanzas, préstamos, ratios y conversión.
Alcance de fuentes
Tomamos como referencia estándares públicos y prácticas habituales por país.
Supuestos
Impuestos, comisiones, tasas y límites cambian según región e institución.
Result Interpretation
Usa este resultado como escenario base. Antes de decidir, compáralo con oferta real y fiscalidad local.
Configuración local
Moneda: EUR
Unidades: metric
Modelo fiscal: US payroll estimate
Aviso normativo
Esta herramienta usa valores locales para estimación. Las condiciones reales y límites legales dependen de la entidad y del país.
Acciones recomendadas
- Compara al menos 2-3 entidades locales antes de contratar.
- Verifica por escrito comisiones, impuestos y cláusulas de prepago.
- Simula un escenario de estrés con +1-2% de interés.
Antes de decidir, verifica las reglas actualizadas de la entidad local.