Track your health metrics with accurate, science-based calculators. Make informed decisions about your wellness — completely free.
Understanding your body starts with knowing the numbers. Our health calculators use formulas validated by medical research to help you assess your weight, daily energy needs, and ideal targets. These tools are educational — always consult a healthcare professional for medical advice.
Calculate your Body Mass Index and find out if you're in a healthy weight range for your height.
Most PopularCalculate your Basal Metabolic Rate and daily calorie needs based on your activity level.
FitnessFind your ideal body weight based on height, gender, and multiple scientific formulas.
HealthBMI tells you whether your weight is in a healthy range for your height. BMR tells you how many calories your body burns at rest. Ideal weight gives you a target backed by multiple medical formulas. Together, these three numbers create a clear picture of where you are and where you might want to be.
Our health tools are educational and based on widely accepted formulas like Mifflin-St Jeor, Devine, and Robinson. They don't account for muscle mass, body composition, or medical conditions. For personalized health planning, always consult a doctor, dietitian, or qualified healthcare professional.
BMI is accurate as a general indicator for most adults, but it doesn't distinguish between muscle and fat. Athletes with high muscle mass may have a high BMI but low body fat.
We use the Mifflin-St Jeor equation, which is considered the most accurate for the general population by current research.
BMI for children should be interpreted using age-and-sex-specific percentiles. Our adult calculators are designed for people 18 and older — please consult a pediatrician for children's health metrics.
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