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Health & Fitness Calculators

Comprehensive collection of medical, health, and fitness calculation tools designed for healthcare professionals, patients, and fitness enthusiasts. Get accurate results for BMI, body composition, calorie needs, pregnancy tracking, and much more.

100+ Health Tools
500K+ Daily Users
99.9% Accuracy

Your Trusted Health Calculation Platform

Whether you are a doctor, medical student, or simply someone taking charge of their health, our scientifically-backed calculators provide accurate answers to your medical and fitness questions. From determining your BMI and calculating calorie needs to pregnancy tracking and medication dosing, we've got your health covered with professional-grade tools that are completely free to use.

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Body Composition & Weight

Assess your body metrics and composition

BMI Calculator
Calculate your Body Mass Index and understand BMI ranges for optimal health assessment.
Body Fat Calculator
Determine your body fat percentage using multiple scientifically validated methods.
Ideal Weight Calculator
Find your ideal weight range based on height, age, and body frame size.
Body Shape Calculator
Determine your body type based on bust, waist, and hip measurements.
Waist-to-Hip Ratio
Assess health risks using waist-to-hip ratio measurements.
Waist-to-Height Ratio
Calculate waist-to-height ratio as an indicator of health and obesity risk.
Body Surface Area (BSA)
Calculate BSA for medical dosing and physiological assessments.
ABSI Calculator
Calculate A Body Shape Index to predict risk of premature death based on body measurements.
BAI Calculator
Body Adiposity Index calculator to determine healthy body fat levels.
Body Frame Size Calculator
Determine your body frame size for accurate weight and health assessments.
Body Roundness Index
Calculate Body Roundness Index as an alternative to BMI for health assessment.
Adjusted Body Weight
Calculate adjusted body weight for precise medical dosing and nutritional planning.
Overweight Calculator
Determine if you're underweight, healthy, overweight, or obese with BMI and ponderal index.
Ponderal Index Calculator
Calculate the improved BMI measure using ponderal index for better health assessment.
Face Shape Calculator
Determine your face shape (oval, round, square, heart, etc.) using facial measurements.
Weight Loss Percentage
Calculate your weight loss as a percentage to track progress effectively.
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Metabolism & Calories

Calculate your metabolic rate and calorie needs

BMR Calculator
Calculate your Basal Metabolic Rate using Harris-Benedict or Mifflin-St Jeor formulas.
RMR Calculator
Determine your Resting Metabolic Rate for accurate calorie planning.
Daily Calorie Calculator
Calculate daily calorie needs based on activity level and goals.
Calorie Intake Calculator
Estimate how many calories you need to eat to maintain your weight.
Macro Calculator
Determine optimal macronutrient distribution for your fitness goals.
Protein Calculator
Calculate daily protein requirements for muscle building and maintenance.
Weight Loss Calculator
Plan your weight loss journey with calorie deficit calculations.
Net Carbs Calculator
Calculate net carbohydrates for ketogenic and low-carb diets.
Quarantine Weight Maintenance
Maintain your weight during periods of reduced activity or quarantine.
Sodium in Salt Calculator
Calculate how much sodium is in different types of salt for dietary planning.
Pokemon Go Weight Loss
Calculate how much weight you can lose while playing Pokemon GO.
Gut Microbiome Score
Evaluate your lifestyle choices and get tips for improving gut health.
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Heart Health & Cardio

Monitor cardiovascular health and fitness

Heart Rate Calculator
Calculate target heart rate zones for optimal exercise intensity.
Max Heart Rate
Determine your maximum heart rate using age-based formulas.
Karvonen Formula
Calculate personalized target heart rate using resting heart rate.
Blood Pressure Calculator
Assess blood pressure readings and cardiovascular risk factors.
Running Pace Calculator
Calculate running pace, time, and distance for training plans.
VO2 Max Calculator
Estimate aerobic fitness and cardiovascular endurance capacity.
HEART Score Calculator
Assess risk of major cardiovascular events in chest pain patients.
Blood Volume Calculator
Calculate total blood volume based on patient characteristics.
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Women's Health & Pregnancy

Specialized calculators for women's health needs

Pregnancy Calculator
Track pregnancy progress, due date, and fetal development milestones.
Due Date Calculator
Calculate estimated due date based on last menstrual period or conception.
Ovulation Calculator
Predict ovulation and fertile window for family planning.
Pregnancy Weight Gain
Monitor healthy weight gain during pregnancy by trimester.
Fertility Calculator
Calculate fertile days and conception probability windows.
Menstrual Cycle Calculator
Track menstrual cycle patterns and predict next periods.
Pregnancy Test Calculator
Learn when to take a pregnancy test and calculate ovulation dates.
HCG Levels Calculator
Track HCG hormone levels during early pregnancy and understand test results.
3 Weeks Pregnancy Test
Understand pregnancy test accuracy at 3 weeks and early detection.
Twin Pregnancy Weight Gain
Calculate healthy weight gain for twin and multiple pregnancies.
Pregnancy BMI Calculator
Assess BMI during pregnancy and understand weight gain recommendations.
Gestational Age Calculator
Calculate gestational age and pregnancy week by week progression.
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Medical & Clinical Tools

Professional medical calculation tools

Dosage Calculator
Calculate medication dosages based on patient weight and age.
Pediatric Dose Calculator
Comprehensive pediatric dosing calculations for children's medications.
Paracetamol Dosage Calculator
Calculate safe paracetamol doses for children based on weight.
Ibuprofen Dosage Calculator
Determine proper ibuprofen dosing for children and adults.
Amoxicillin Pediatric Dosage
Calculate amoxicillin doses for children based on age, weight, and indication.
Kidney Function (eGFR)
Estimate glomerular filtration rate for kidney function assessment.
Pediatric BMI Calculator
Calculate BMI percentiles for children and adolescents.
MELD Score Calculator
Calculate Model for End-Stage Liver Disease score for transplant prioritization.
CURB-65 Calculator
Assess pneumonia severity and determine hospital vs. outpatient treatment.
SOFA Score Calculator
Sequential Organ Failure Assessment for critically ill patients.
NIH Stroke Scale Calculator
Assess stroke severity and monitor neurological changes over time.
Frailty Index Calculator
Assess frailty in elderly patients using comprehensive health deficits.
NNT Calculator
Calculate Number Needed to Treat and Absolute Risk Reduction.
Endotracheal Tube Size
Calculate appropriate ET tube size for pediatric and adult patients.
Time of Death Calculator
Estimate time elapsed between death and body discovery for forensic purposes.
Fatigue Severity Scale
Assess the impact and severity of fatigue symptoms.
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Fitness & Exercise

Optimize your workout and fitness planning

Calories Burned Calculator
Calculate calories burned during various physical activities and exercises.
One Rep Max Calculator
Estimate maximum lifting capacity for strength training programs.
Lean Body Mass
Calculate muscle mass and fat-free body weight for fitness tracking.
Body Fat Measurement
Measure body fat using skinfold, Navy, or YMCA methods.
Workout Intensity
Calculate exercise intensity zones and training recommendations.
Hydration Calculator
Determine daily water intake needs based on activity and climate.

Medical Disclaimer

Important: All calculators on this page are for educational and informational purposes only. They should not replace professional medical advice, diagnosis, or treatment. Always consult with qualified healthcare professionals for medical conditions, concerns, or before making any health-related decisions. These tools use scientifically validated formulas but individual health needs may vary significantly.