Health Calculators
Instant, accurate health calculations — BMI, calories, heart risk, pregnancy, sleep cycles & more. No login required.
Body & Fitness
5 calculators· Free & instant
BMI Calculator
Calculate Body Mass Index to assess healthy weight range.
BMR Calculator
Find your Basal Metabolic Rate — calories burned at rest.
TDEE Calculator
Total Daily Energy Expenditure based on activity level.
Body Fat %
Estimate body fat percentage using Navy measurement method.
Ideal Body Weight
Find your ideal healthy body weight range for your height.
Nutrition & Diet
3 calculators· Free & instant
Calorie Intake
Daily calorie intake target for weight loss, gain, or maintain.
Macronutrients
Optimal protein, carbs and fat ratio for your fitness goal.
Water Intake
Daily water intake recommendation based on weight and climate.
Heart & Risk
3 calculators· Free & instant
Heart Rate Zones
Max heart rate & training zones for safe cardio workouts.
Blood Pressure
Classify your blood pressure reading — normal, elevated or high.
Cardiovascular Risk
10-year cardiovascular risk score using Framingham scale.
General Health
4 calculators· Free & instant
Blood Sugar
Check fasting or post-meal glucose and HbA1c interpretation.
Pregnancy Due Date
Estimated due date from last menstrual period or conception date.
Ovulation / Fertility
Predict fertile window and most likely ovulation day.
Sleep Cycle
Best sleep & wake times based on 90-minute REM sleep cycles.
Exercise & Activity
3 calculators· Free & instant
Calories Burned
Calories burned during common exercises using MET formula.
Running Pace
Running pace, finish time, and speed for any distance.
VO₂ Max
Estimate VO₂ Max fitness level from a simple 1.5-mile run test.
Medical Disclaimer
All calculators are for informational purposes only. Results are estimates based on population-level formulas. Always consult a qualified healthcare professional before making medical, dietary, or fitness decisions. In emergencies, call 112.