Free health calculators for BMI, calories, body fat, pregnancy, heart rate, and more. Track your fitness journey.
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Calculators
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Flagship Tools
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Free Blood Pressure Calculator โ Interpret systolic and diastolic blood pressure readings and understand your cardiovascular health. Get instant classification of your BP according to clinical guidelines with personalized recommendations.
Free Mean Arterial Pressure Calculator โ Calculate MAP from systolic and diastolic blood pressure. Essential for assessing tissue perfusion and cardiovascular function in clinical settings.
Free Pulse Pressure Calculator โ Compute pulse pressure from systolic and diastolic readings. Monitor arterial stiffness and cardiovascular risk with this simple clinical measurement.
Free Cardiac Output Calculator โ Estimate cardiac output from heart rate and stroke volume. Assess how well your heart pumps blood to support vital organ function.
Free Stroke Volume Calculator โ Calculate stroke volume from cardiac output and heart rate. Measure the amount of blood pumped per heartbeat for cardiac assessment.
Free Ejection Fraction Calculator โ Estimate left ventricular ejection fraction from stroke volume and end-diastolic volume. Critical for diagnosing and monitoring heart failure.
Free Heart Age Calculator โ Estimate your heart age based on blood pressure, BMI, smoking status, and other risk factors. Understand your cardiovascular risk compared to your chronological age.
Free Framingham Risk Score Calculator โ Estimate 10-year cardiovascular disease risk using the Framingham Heart Study model. Assess coronary heart disease risk for preventive care planning.
Free ASCVD Risk Calculator โ Estimate 10-year and lifetime atherosclerotic cardiovascular disease risk using the ACC/AHA pooled cohort equations. Guide statin therapy and prevention decisions.
Free CHADS-VASc Score Calculator โ Assess stroke risk in patients with atrial fibrillation using the CHADS-VASc scoring system. Guide anticoagulation therapy decisions for stroke prevention.
Free Heart Rate Zone Calculator โ Determine your target heart rate zones for exercise based on age and resting heart rate. Optimize workout intensity for fat burn, cardio, and peak performance.
Free Target Heart Rate Calculator โ Calculate your ideal target heart rate for exercise using the Karvonen method. Train at the right intensity for maximum cardiovascular benefits.
Free Waist-to-Hip Ratio Calculator โ Measure your waist-to-hip ratio to assess body fat distribution and cardiovascular risk. Simple anthropometric measurement for metabolic health screening.
Free Waist-to-Height Ratio Calculator โ Evaluate your waist-to-height ratio as a predictor of cardiometabolic risk. A simple and effective screening tool for central obesity and health risks.
Free Body Roundness Index Calculator โ Calculate your Body Roundness Index (BRI) from height and waist circumference. A newer anthropometric measure that estimates body fat distribution and health risk.
Free Ponderal Index Calculator โ Calculate the Ponderal Index as an alternative to BMI for assessing body mass relative to height. Useful for pediatric and adult body composition assessment.
Free Frame Size Calculator โ Determine your body frame size based on wrist circumference and height. Understand your skeletal frame type to set realistic weight and body composition goals.
Free Lean Body Mass Calculator โ Estimate your lean body mass (LBM) using validated formulas. Track muscle mass versus fat mass for fitness progress and body composition analysis.
Free Fat-Free Mass Index Calculator โ Calculate FFMI as a height-adjusted measure of lean muscle mass. Used by athletes and clinicians to assess nutritional status and muscle development.
Free Skeletal Muscle Mass Calculator โ Estimate your skeletal muscle mass using anthropometric measurements. Monitor muscle development and sarcopenia risk for better health outcomes.
Free Body Fat Caliper Calculator โ Estimate body fat percentage from skinfold measurements using Jackson-Pollock and other protocols. Track body composition changes with precision caliper readings.
Free Navy Body Fat Calculator โ Calculate body fat percentage using the US Navy circumference method. Military-standard body composition assessment using height, waist, neck, and hip measurements.
Free VO2 Max Estimate Calculator โ Estimate your VO2 max without exercise testing using age, gender, and activity level. Assess cardiorespiratory fitness for health and athletic performance.
Free MET Minutes Calculator โ Calculate MET-minutes of physical activity per week to meet exercise guidelines. Track your total weekly exercise volume for health and fitness goals.
Free Exercise Heart Rate Calculator โ Find your optimal exercise heart rate range for different workout intensities. Train smarter with personalized heart rate targets for warm-up, aerobic, and anaerobic zones.
Free Recovery Heart Rate Calculator โ Measure your heart rate recovery after exercise as an indicator of cardiovascular fitness. Track how quickly your heart rate returns to baseline after exertion.
Free Heart Rate Variability Calculator โ Analyze your heart rate variability (HRV) for autonomic nervous system assessment. Monitor stress, recovery, and overall health through HRV metrics.
Free Training Impulse Calculator โ Calculate TRIMP (training impulse) to quantify your workout load. Monitor training stress and balance intensity with recovery for optimal performance gains.
Free Fitness Age Calculator โ Estimate your fitness age based on resting heart rate, BMI, and activity habits. Compare your cardiovascular fitness level to population norms for your age group.
Free Physical Activity Level Calculator โ Determine your PAL score from your daily activity patterns. Estimate total energy expenditure and calorie needs based on lifestyle and exercise habits.
Free PAL Calculator โ Calculate your Physical Activity Level (PAL) with detailed activity logging. Get a precise activity factor for accurate BMR-based daily calorie requirement estimation.
Free NEAT Calculator โ Estimate your Non-Exercise Activity Thermogenesis (NEAT) from daily non-exercise movements. Understand how everyday activities contribute to your total daily energy expenditure.
Free Protein Intake Calculator โ Calculate your daily protein needs based on weight, activity level, and fitness goals. Optimize protein intake for muscle building, weight loss, or general health.
Free Carbohydrate Calculator โ Determine your optimal daily carbohydrate intake based on activity level and goals. Balance carbs for energy, performance, and metabolic health.
Free Dietary Fat Calculator โ Calculate your recommended daily fat intake based on calorie needs and health goals. Understand healthy fat ratios for heart health and optimal nutrition.
Free Fiber Intake Calculator โ Determine your daily fiber needs based on age, gender, and calorie intake. Improve digestive health and meet recommended dietary fiber goals.
Free Sugar Intake Calculator โ Track your daily added and natural sugar consumption against WHO recommendations. Manage sugar intake for better metabolic health and weight control.
Free Sodium Intake Calculator โ Calculate your daily sodium consumption from common foods and track against recommended limits. Manage salt intake for heart health and blood pressure control.
Free Vitamin D Calculator โ Estimate your daily vitamin D needs based on sun exposure, skin type, and dietary intake. Optimize vitamin D levels for bone health and immune function.
Free Calcium Intake Calculator โ Calculate your daily calcium requirements based on age, gender, and life stage. Ensure adequate calcium for bone density and overall skeletal health.
Free Iron Intake Calculator โ Determine your daily iron needs based on age, gender, and dietary patterns. Prevent iron deficiency anemia with personalized iron intake recommendations.
Free Water Needs Calculator โ Calculate your daily hydration needs based on weight, activity level, and climate. Stay properly hydrated with personalized water intake recommendations.
Free Saturated Fat Calculator โ Track your saturated fat intake against daily limits recommended by health organizations. Manage heart health by monitoring saturated fat consumption.
Free Added Sugar Calculator โ Identify and calculate added sugars in your diet from packaged foods and beverages. Reduce hidden sugar consumption for better metabolic and dental health.
Free Pregnancy Weight Gain Calculator โ Track recommended pregnancy weight gain based on pre-pregnancy BMI and trimester. Follow IOM guidelines for healthy gestational weight gain.
Free Gestational Age Calculator โ Calculate current gestational age and estimated due date from last menstrual period or conception date. Track pregnancy progress week by week.
Free Fetal Growth Percentile Calculator โ Estimate fetal weight and growth percentile based on ultrasound measurements. Monitor fetal development and detect growth abnormalities.
Free Fertility Window Calculator โ Identify your most fertile days based on menstrual cycle length and ovulation date. Maximize chances of conception with accurate fertility timing.
Free Implantation Date Calculator โ Estimate when implantation occurred based on ovulation date and conception timing. Understand early pregnancy milestones and when to expect pregnancy symptoms.
Free hCG Doubling Time Calculator โ Calculate hCG doubling time and expected levels in early pregnancy. Monitor pregnancy progression and viability through serial hCG measurements.
Free Due Date by Conception Calculator โ Calculate your estimated due date based on the date of conception. Get an accurate delivery timeline for pregnancy planning and prenatal care.
Free Naegele's Rule Calculator โ Calculate your estimated due date using Naegele's Rule based on last menstrual period. The standard obstetric method for estimating delivery date.
Free Pregnancy Week by Week Calculator โ Track your current pregnancy week and see what to expect at each stage. Get weekly fetal development updates and maternal health tips.
Free Expected Delivery Date Calculator โ Calculate your expected delivery date using multiple methods including LMP, conception date, and ultrasound dating. Comprehensive due date estimation tool.
Free Child BMI Percentile Calculator โ Calculate BMI percentile for children and teens using CDC growth charts. Assess pediatric weight status and growth patterns for ages 2 to 19.
Free Infant Growth Percentile Calculator โ Plot infant weight, length, and head circumference on WHO growth charts. Monitor infant development from birth to 24 months.
Free Height Predictor Calculator โ Predict adult height for children using the mid-parental height method. Estimate final adult height based on parental heights and current growth trajectory.
Free Target Height Calculator โ Calculate target height range for children based on parental heights. Understand expected growth potential and monitor for growth disorders.
Free Bone Age Calculator โ Estimate skeletal maturity and bone age from hand-wrist X-ray parameters. Assess growth potential and diagnose growth disorders in children and adolescents.
Free Pediatric Blood Pressure Calculator โ Assess blood pressure percentiles for children based on age, gender, and height. Identify hypertension and hypotension in pediatric patients.