Health & Fitness
BMI, calorie counters, body fat percentage, water intake, and fitness calculators.
A Body Shape Index (ABSI) Calculator
Calculates A Body Shape Index (ABSI) to estimate abdominal obesity risk based on waist circumference, weight, and height.
Adjusted Body Weight (AdjBW) Calculator
Calculates Adjusted Body Weight for clinical dosing and nutrition planning when actual body weight exceeds ideal body weight.
Albumin to Globulin (A/G) Ratio Calculator
Calculates the Albumin/Globulin ratio using total serum protein and serum albumin values.
Alveolar Oxygen Pressure (PAO₂) Calculator
Estimates alveolar oxygen pressure using the alveolar gas equation.
Anion Gap Calculator
Calculates the anion gap using standard electrolyte values from a basic metabolic panel.
Ankle-Brachial Index (ABI) Calculator
Calculates the Ankle-Brachial Index (ABI) to assess peripheral artery disease (PAD) using systolic blood pressure measurements.
BMI Calculator
Calculate your Body Mass Index (BMI) to assess your weight category and health status.
BMI Prime Calculator
Calculates BMI Prime by comparing BMI to the upper limit of the normal BMI range (25).
BUN-to-Creatinine Ratio Calculator
Calculates the Blood Urea Nitrogen (BUN) to Creatinine ratio to help assess kidney function and hydration status.
Basal Metabolic Rate (BMR) Calculator
Calculate daily calorie needs at rest using the Mifflin-St Jeor equation.
Blood Alcohol Content (BAC) Calculator
Estimates Blood Alcohol Content (BAC) using the Widmark formula based on alcohol consumed, body weight, distribution ratio, and time since drinking began.
Blood Volume Calculator
Estimates total blood volume based on body weight and average blood volume factor.
Body Adiposity Index (BAI) Calculator
Estimates body fat percentage using hip circumference and height.
Body Fat Calculator (Navy Method)
Calculate body fat percentage using US Navy method
Body Fat Mass Calculator
Calculate total body fat mass based on body weight and body fat percentage.
Body Fat Percentage Calculator
Estimate body fat percentage using measurements.
Body Frame Size Ratio Calculator
Calculate your Body Frame Size Ratio using wrist circumference and height to estimate skeletal frame size.
Body Roundness Index (BRI) Calculator
Estimates Body Roundness Index (BRI) using waist circumference and height measurements.
Body Surface Area (BSA) Calculator
Calculate Body Surface Area using the Mosteller formula.
Body Surface Area (BSA)–Based Dosage Calculator
Estimates total medication dose using the Mosteller BSA formula.
Body Surface Area to Body Weight Ratio Calculator
Calculates the ratio of body surface area to body weight, commonly used in physiology, thermoregulation, and sports science.
Body Water Percentage Calculator
Estimates total body water percentage using total body water volume, body weight, and a multiplier constant.
Caffeine Remaining Calculator
Estimates the amount of caffeine remaining in the body after a certain number of hours based on caffeine half-life.
Calcium-Phosphate (Ca × P) Product Calculator
Calculates the Calcium-Phosphate product used in nephrology to assess vascular calcification risk.
Calorie Burn Calculator
Calculate calories burned during exercise
Calorie Deficit Calculator
Calculate your daily calorie deficit needed for weight loss.
Calorie Surplus Calculator
Estimates target daily calorie intake for muscle gain based on maintenance calories and desired surplus percentage.
Calories from Fat Percentage Calculator
Calculate what percentage of total daily calories comes from fat.
Cardiac Output Calculator
Estimates the amount of blood the heart pumps per minute based on stroke volume and heart rate.
Child Growth Velocity Calculator
Estimates a child's annualized growth rate in centimeters per year based on height measurements.
Child Waist-to-Height Ratio Calculator
Estimates a child’s waist-to-height ratio using waist circumference and height entered in the same unit system.
Child Waist-to-Height Ratio Calculator
Calculates the child waist-to-height ratio using waist circumference and height measurements.
Child Waist-to-Height Ratio Calculator
Estimates a child's waist-to-height ratio using waist circumference and height entered in the same unit.
Child-Pugh Score Calculator
Calculates the Child-Pugh Score to assess the severity of chronic liver disease using five clinical parameter scores.
Conicity Index Calculator
Calculates the Conicity Index to estimate abdominal fat distribution and body shape risk using waist circumference, weight, and height.
Corrected Calcium Calculator
Estimates adjusted serum calcium based on albumin levels using the standard clinical correction formula.
Corrected QT Interval (QTc) Calculator
Calculates the corrected QT interval (QTc) using Bazett’s formula to adjust QT for heart rate.
Corrected Reticulocyte Count Calculator
Calculates the corrected reticulocyte count by adjusting the reticulocyte percentage based on the patient’s hematocrit using a normal reference value of 45%.
Corrected Serum Sodium Calculator
Calculates corrected serum sodium level in patients with hyperglycemia using the standard correction factor.
Corrected Serum Sodium Calculator (Hyperglycemia)
Estimates corrected serum sodium in patients with hyperglycemia using a standard correction formula.
Creatine Dosage Calculator
Estimates the recommended daily creatine intake based on body weight and desired dosage per kilogram.
Creatinine Clearance (Cockcroft-Gault) Calculator
Estimates creatinine clearance using the Cockcroft-Gault equation.
Creatinine Clearance Calculator (24-Hour Urine Method)
Calculates creatinine clearance in mL/min using the 24-hour urine collection method.
Daily Calorie Intake Calculator
Estimate total daily calorie intake based on grams of protein, carbohydrates, and fat consumed.
Daily Calorie Intake Calculator
Estimates total daily calorie intake based on macronutrient consumption.
Daily Water Intake Calculator
Estimates recommended daily water intake based on body weight and daily exercise duration.
Daily Water Intake Calculator
Estimates recommended daily water intake based on body weight, exercise duration, and climate temperature.
Daily Water Intake Calculator
Estimates recommended daily water intake based on body weight, exercise duration, and climate adjustment.
Ejection Fraction (EF) Calculator
Calculates the heart's Ejection Fraction (EF), which measures the percentage of blood pumped out of the left ventricle with each contraction.
FEV1/FVC Ratio Calculator
Estimates lung function by calculating the percentage ratio between Forced Expiratory Volume in 1 second (FEV1) and Forced Vital Capacity (FVC).
FIB-4 Index Calculator
Estimates liver fibrosis risk using age and common laboratory values (AST, ALT, and platelet count).
Fat-Free Mass Index (FFMI) Calculator
Estimates muscularity level based on body weight, body fat percentage, and height.
Free Testosterone Index (FTI) Calculator
Estimates the Free Testosterone Index (FTI) using total testosterone and SHBG levels.
Free Water Deficit Calculator
Estimates the amount of free water (in liters) needed to correct hypernatremia.
Glycemic Load (GL) Calculator
Estimates the glycemic impact of a specific serving of food using Glycemic Index and carbohydrate content.
HOMA-IR (Homeostatic Model Assessment of Insulin Resistance) Calculator
Estimates insulin resistance using fasting blood glucose and fasting insulin levels.
HOMA-β Calculator
Calculate pancreatic beta-cell function using the HOMA-β (Homeostatic Model Assessment of Beta Cell Function) formula.
HbA1c to Estimated Average Glucose (eAG) Calculator
Converts Hemoglobin A1c (HbA1c) percentage to Estimated Average Glucose (eAG) using the ADAG study formula.
Heart Rate Recovery (HRR) Calculator
Calculates how much your heart rate decreases in the first minute after exercise.
Heart Rate Reserve (HRR) Calculator
Calculates Heart Rate Reserve by subtracting resting heart rate from maximum heart rate.
Heart Rate Zone Calculator
Calculate maximum heart rate and training zones
IV Drip Rate Calculator
Calculate the required IV drip rate in drops per minute (gtt/min).
Ideal Weight Calculator
Calculate ideal body weight using Robinson formula
Jackson-Pollock 3-Site Body Density Calculator (Men)
Calculates body density using the Jackson-Pollock 3-site skinfold formula for men.
Jackson-Pollock 7-Site Body Density Calculator (Men)
Calculates body density for men using the Jackson-Pollock 7-site skinfold formula.
Keto Macro Ratio Calculator
Calculates the ketogenic ratio by dividing fat grams by the combined grams of protein and carbohydrates.
LDL Cholesterol Calculator (Friedewald Equation)
Estimates LDL (Low-Density Lipoprotein) cholesterol using the Friedewald Equation.
LDL to HDL Cholesterol Ratio Calculator
Calculates the LDL to HDL cholesterol ratio to help assess cardiovascular risk.
Lean Body Mass Calculator
Calculate lean body mass using Boer formula
Lean Bulk Calorie Calculator
Estimate recommended daily calorie intake for lean muscle gain based on maintenance calories and desired surplus percentage.
Macronutrient Grams Calculator
Calculates the grams of a macronutrient based on total daily calories and macro percentage.
Maximum Heart Rate (MHR) Calculator
Estimate your maximum heart rate using the classic 220 − age formula.
Mean Arterial Pressure (MAP) Calculator
Estimates the average arterial pressure during a single cardiac cycle using systolic and diastolic blood pressure values.
Mean Corpuscular Hemoglobin (MCH) Calculator
Calculates the average amount of hemoglobin per red blood cell using hemoglobin concentration and RBC count.
Mean Corpuscular Volume (MCV) Calculator
Estimates the average size of red blood cells using hematocrit and RBC count.
Medication Dosage Calculator
Calculates the total medication dose based on body weight and prescribed dosage per kilogram.
Mid-Parental Height Calculator
Estimates a child's expected adult height using the simple average of both parents' heights.
Mid-Parental Height Calculator
Estimates a child's predicted adult height using the mid-parental height formula.
Net Carbs Calculator
Calculate net carbohydrates for low-carb or keto diets by subtracting fiber and sugar alcohols from total carbohydrates.
Non-HDL Cholesterol Calculator
Calculates non-HDL cholesterol by subtracting HDL cholesterol from total cholesterol.
Ovulation Day Estimator
Estimates the ovulation day based on menstrual cycle length and luteal phase length.
Oxygenation Index (OI) Calculator
Calculates the Oxygenation Index (OI) to assess the severity of hypoxic respiratory failure in critical care settings.
PaO₂/FiO₂ Ratio (P/F Ratio) Calculator
Calculates the P/F ratio to assess oxygenation efficiency in clinical settings.
Pack Years Smoking Calculator
Estimates lifetime smoking exposure in pack-years based on daily cigarette consumption and years smoked.
Ponderal Index Calculator
Calculate the Ponderal Index (PI), a body composition metric based on height cubed.
Pregnancy Weight Gain Calculator
Estimates a woman's target weight during pregnancy based on pre-pregnancy weight, current week, and average weekly weight gain.
Protein Calorie Percentage Calculator
Calculates the percentage of total daily calories that come from protein.
Protein Requirement Calculator
Calculate your daily protein requirements.
Pulse Pressure Calculator
Calculates pulse pressure by subtracting diastolic blood pressure from systolic blood pressure.
Pure Alcohol Content Calculator
Estimates the grams of pure alcohol in a drink based on volume and alcohol percentage (ABV).
Running Pace Calculator
Calculate running pace (min/km)
Serum Osmolality Calculator
Estimates calculated serum osmolality using sodium, glucose, and blood urea nitrogen (BUN) values.
Shock Index Calculator
Estimates hemodynamic stability using heart rate and systolic blood pressure.
Shoulder-to-Waist Ratio Calculator
Calculates the shoulder-to-waist ratio using shoulder and waist circumference measurements.
Sleep Debt Calculator
Estimate total accumulated sleep debt over a selected period based on recommended and actual sleep.
Sleep Efficiency Calculator
Calculates the percentage of time a person was asleep while in bed.
Steps to Miles Calculator
Convert walking or running steps into miles traveled using average stride length in feet.
Stroke Volume Calculator
Estimates the amount of blood pumped by the heart per beat using cardiac output and heart rate.
Sweat Rate Calculator
Estimates an athlete’s sweat loss per hour during exercise.
TDEE Calculator
Calculate your Total Daily Energy Expenditure.
Target Heart Rate Calculator (Karvonen Formula)
Calculate your target heart rate for exercise using the Karvonen formula based on maximum heart rate, resting heart rate, and exercise intensity.
Total Body Water Percentage Calculator
Estimates Total Body Water (TBW) percentage based on measured total body water and body weight.
Total Cholesterol to HDL Ratio Calculator
Calculates the Total Cholesterol to HDL Cholesterol ratio, a cardiovascular risk indicator.
Total Steps Calculator
Calculate the total number of steps taken based on distance walked and average step length.
Transferrin Saturation Calculator
Estimates transferrin saturation percentage based on serum iron and total iron-binding capacity (TIBC).
Triglyceride to HDL Ratio Calculator
Calculates the ratio between fasting triglycerides and HDL cholesterol levels.
Urine Protein-to-Creatinine Ratio (UPCR) Calculator
Calculates the Urine Protein-to-Creatinine Ratio (UPCR) to assess kidney function and proteinuria.
VO2 Max Calculator
Estimate VO2 Max from running performance
Waist-to-Chest Ratio Calculator
Calculate the waist-to-chest ratio using waist and chest circumference measurements.
Waist-to-Height Ratio (WHtR) Calculator
Estimates body fat distribution and potential health risk using waist circumference and height.
Waist-to-Height Ratio Calculator
Calculates the waist-to-height ratio used for health and fitness assessment.
Waist-to-Height Ratio Calculator
Calculates waist-to-height ratio using waist circumference and height entered in the same unit system.
Waist-to-Height Score Calculator
Calculates the waist-to-height score as a ratio percentage using waist circumference and height measurements.
Waist-to-Height Score Calculator
Calculates a waist-to-height percentage score used to estimate abdominal fat and cardiometabolic risk.
Waist-to-Height Score Calculator
Calculates a waist-to-height percentage score used in fitness and health tracking.
Waist-to-Shoulder Ratio Calculator
Estimate the waist-to-shoulder ratio for physique, fitness, and body proportion tracking.
Walking Calories Burned Calculator
Estimate the number of calories burned while walking based on body weight and walking distance.
Water Intake Calculator
Calculate your recommended daily water intake.
Weekly Weight Change Calculator
Calculates the average weight gained or lost per week based on starting weight, current weight, and number of weeks.
Weight Goal Timeline Calculator
Estimate the number of weeks required to reach a target weight based on planned weekly weight change.
eGFR (Estimated Glomerular Filtration Rate) Calculator
Estimates kidney function using the simplified MDRD equation based on serum creatinine and age.