Health & Wellness
Free Health Calculators
Accurate, private tools for fitness, pregnancy, sleep, and general health tracking.
BMI Calculator
Check Body Mass Index and healthy weight range.
Body Fat Percentage Calculator
US Navy & YMCA tape-measure body fat estimates.
Ideal Body Weight Calculator
Devine, Robinson & Miller medical formulas.
TDEE & Macro Calculator
Calculate total daily energy expenditure and macros.
Daily Water Intake Calculator
Personalized hydration based on weight, activity & climate.
Heart Rate Zones Calculator
5-zone cardio training targets (Karvonen & %max).
VO2 Max Estimator
Rockport walk test or non-exercise aerobic fitness estimate.
Calorie Deficit Planner
Safe weight loss timeline with daily targets & visuals.
Pregnancy Due Date Calculator
Estimate baby arrival date from last menstrual period.
Sleep Cycle Calculator
Plan optimal bedtime or wake-up time for better rest.
Period Calculator
Predict next period dates and fertile window.
Age Calculator
Calculate exact age in years, months, and days.
Take Control of Your Health Numbers
Understanding your body metrics helps you make better lifestyle decisions. All our health calculators are designed to be easy to use while remaining scientifically grounded. Your personal health data never leaves your device.
Frequently Asked Questions
Are these medical diagnostic tools?
No. These are informational calculators only. Always consult a qualified doctor for medical advice.