Health Calculators
About These Health Calculators
These free health calculators help you understand your body's numbers — from whether your weight falls in a healthy range to how many calories you need each day to reach your goals. All calculators support both imperial (lbs, feet/inches) and metric (kg, cm) units.
All calculators run entirely in your browser. Nothing you enter is sent to a server or stored anywhere.
Tools in This Category
- BMI Calculator — Calculate your Body Mass Index, see your weight category, and find your healthy weight range for your height
- TDEE Calculator — Calculate your Total Daily Energy Expenditure and get daily calorie targets for weight loss, maintenance, or muscle gain
Important Disclaimer
These calculators are informational tools based on widely used formulas (such as the Mifflin-St Jeor equation for BMR and the standard WHO BMI categories). They are not a substitute for advice from a qualified healthcare provider. Individual results vary based on factors these formulas cannot account for, including medical conditions, medications, body composition, and activity patterns.
How to Use These Calculators
Each calculator is designed to answer one specific question. For best results:
- Use accurate, current measurements — weigh yourself in the morning before eating for the most consistent results
- Choose the activity multiplier honestly for TDEE — most people are more sedentary than they think
- Use the results as a starting point, track your actual progress over 2–3 weeks, and adjust from real-world data rather than solely from calculated estimates