Health & Fitness
26 free online tools
Health and fitness calculators for wellness tracking, nutrition planning, and personal health metrics. Calculate BMI, BMR, calorie needs, body fat percentage, and more to support your health goals.
Waist-to-Hip Ratio Calculator
Calculate WHR to assess body fat distribution and health risks
Heart Rate Zone Calculator
Calculate heart rate training zones for optimal fitness and performance
Sleep Debt Calculator
Calculate your sleep debt and get personalized recovery plans with weekly tracking
Pregnancy BMI Calculator
Calculate pregnancy BMI and track recommended weight gain with trimester guidance
BMI Calculator for Kids
Calculate BMI percentile for children and teens aged 2-20 with health recommendations
Total Body Water Calculator
Calculate total body water, ICW/ECW distribution, and daily hydration needs
BMI Calculator for Women
Calculate BMI, ideal weight, and body fat percentage for women
TDEE Calculator
Calculate Total Daily Energy Expenditure, BMR, and macronutrient needs for your fitness goals
Arterial Age Calculator
Calculate your arterial age based on cardiovascular risk factors and get personalized health recommendations
BMR Calculator
Calculate Basal Metabolic Rate and daily calorie needs
AHI Calculator
Calculate Apnea-Hypopnea Index for sleep apnea severity assessment
Blood Pressure Calculator
Calculate BP category, MAP, pulse pressure and cardiovascular risk
Lung Capacity Calculator
Calculate TLC, FVC, FEV1 and respiratory volumes
Weight Loss Calculator
Calculate calorie deficit and timeline to reach your target weight
Eye Power Calculator
Analyze vision prescription and get lens recommendations
BMI Calculator
Calculate Body Mass Index and check healthy weight
Body Fat Percentage Calculator
Calculate body fat using Navy, Army, or BMI-based methods
Carbohydrate Calculator
Calculate daily carbohydrate intake based on activity level, goals, and body metrics
Water Intake Calculator
Calculate recommended daily water intake based on weight, age, and activity
Fiber Intake Calculator
Track your daily fiber consumption and meet your nutritional goals
Cholesterol Ratio Calculator
Calculate and track your cholesterol levels for better heart health
Blood Sugar Converter
Convert and track blood glucose levels between mg/dL and mmol/L
Sunscreen Calculator
Calculate protection time and sunscreen needs based on your skin type and UV conditions
Vitamin Calculator
Track your daily vitamin intake and meet your nutritional goals
Protein Intake Calculator
Determine daily protein needs based on body weight, fitness goal, and activity level
Calorie Calculator
Calculate daily calorie needs for weight goals
Why Use Our Health & Fitness Tools?
Comprehensive health metrics calculators with detailed results
Nutrition calculators for protein, carbs, fiber, and water intake
Fitness tracking tools for calories, steps, and heart rate zones
Body composition calculators for BMI and body fat percentage
All calculations based on standard health and fitness formulas
Privacy-focused - all calculations done locally in your browser
Common Use Cases
Calculating BMI and ideal body weight for health tracking
Determining daily calorie needs for weight management
Computing protein and macronutrient requirements
Tracking water intake based on body weight and activity
Determining heart rate zones for optimal training
Calculating body fat percentage for fitness goals
Planning nutrition and meal macros for diet plans
Monitoring sleep debt and recovery needs