Health & Fitness Calculators
Take control of your health and fitness journey with calculators for BMI, calorie tracking, body measurements, and medical metrics. Get personalized insights to help you achieve your wellness goals and understand important health indicators.
91 calculators available
Ankle-Brachial Index (ABI) Calculator
Screen for peripheral artery disease by comparing ankle and arm blood pressure
Blood Alcohol Content (BAC) Calculator
Calculate your Blood Alcohol Content (BAC) level and impairment category
Absolute Neutrophil Count (ANC) Calculator
Calculate Absolute Neutrophil Count to assess infection risk
Anion Gap Calculator
Calculate anion gap to assess acid-base disorders
AST/ALT Ratio Calculator
Calculate AST/ALT ratio for liver health assessment
Baby Percentile Calculator
Track your baby's growth with WHO percentile charts for weight, height, and head circumference
Basal Metabolic Rate Calculator – BMR & TDEE
Calculate your BMR and daily calorie needs based on activity level
Berg Balance Test Calculator – Fall Risk Assessment
Assess fall risk and balance with the Berg Balance Scale
Beta HCG Calculator – Pregnancy Hormone Level Interpretation
Interpret Beta HCG levels and estimate gestational age
Beta HCG by Week Calculator – Expected Hormone Ranges
Find expected HCG levels by week of pregnancy
Blood Pressure Calculator – BP Monitor
Calculate and monitor your blood pressure category and cardiovascular health
BMI Calculator – Body Mass Index
Calculate your Body Mass Index to assess your weight category
Body Fat Calculator – Body Fat Percentage
Calculate your body fat percentage and body composition using circumference measurements
Body Roundness Index Calculator – BRI Assessment
Calculate your Body Roundness Index to assess body shape and health risks
Body Shape Type Calculator – Find Your Body Shape
Discover your body shape type using body measurements
Body Surface Area Calculator – Medication Dosing Aid
Calculate body surface area (BSA) with multiple medical formulas and unit conversions.
When to Breastfeed Again After Alcohol Calculator – Safe Timing
Calculate safe time to breastfeed after alcohol consumption
BUN Creatinine Ratio Calculator – Kidney Function Check
Compute the BUN/creatinine ratio with mg/dL and SI unit support, plus interpretation guidance.
Caffeine Intake Breakdown Calculator
Track caffeine from multiple beverages and foods with instant limit guidance.
Caffeine Half-Life Calculator
Track remaining caffeine over time based on half-life dynamics.
Daily Calorie Needs Calculator – Personalized Energy Targets
Set calorie goals with macro suggestions based on your activity and objective.
Calorie Deficit Calculator – Weight Loss Planning
Calculate the daily calorie deficit needed for your weight loss goals
Cardiac Index Calculator – Heart Function Assessment
Calculate cardiac index to assess heart function relative to body size
Cardiac Output Calculator – Heart Pumping Capacity
Calculate cardiac output from stroke volume and heart rate
Cardiovascular Risk Calculator
Estimate your 10-year cardiovascular disease risk based on health factors
CHADS-VASC Score Calculator – Stroke Risk Assessment
Assess stroke risk in atrial fibrillation patients using the CHADS-VASC score
Cholesterol Calculator – Cholesterol Ratios & Risk Assessment
Calculate cholesterol ratios and assess your cardiovascular risk
Corrected Sodium Calculator
Calculate corrected sodium levels for hyperglycemia
Creatine Dosage Calculator – Loading & Maintenance
Calculate optimal creatine dosage based on your body weight
Creatinine Clearance Calculator
Calculate kidney function and creatinine clearance rate using the Cockcroft-Gault formula.
Days Supply Calculator
Calculate medication days supply based on quantity and dosing schedule.
Enteral Nutrition Calculator – Tube Feeding Requirements
Calculate tube feeding nutritional requirements including calories, protein, and fluids
Fat Mass Calculator – Body Fat Percentage & Composition
Calculate body fat percentage and fat mass using the U.S. Navy method
Fenbendazole Dosage Calculator
Calculate fenbendazole dosage based on weight and protocol
Fertility Calculator – Ovulation & Fertile Window
Calculate your fertile window and ovulation day
FET Due Date Calculator – Frozen Embryo Transfer
Calculate your pregnancy due date after FET
Fetal Length Calculator – Baby Size by Week
Calculate estimated fetal length by gestational age
Fetal Percentile Calculator – Baby Growth Chart
Calculate fetal weight percentile by gestational age
FFMI Calculator – Fat-Free Mass Index
Calculate your Fat-Free Mass Index to evaluate muscle mass
Free Water Deficit Calculator – Hypernatremia Correction
Calculate free water deficit for hypernatremia correction
Gastric Sleeve Weight Loss Calculator – Surgery Recovery Timeline
Calculate expected weight loss after gastric sleeve surgery
GKI Calculator – Glucose Ketone Index
Calculate your Glucose Ketone Index for metabolic health assessment
GFR Calculator – Glomerular Filtration Rate (eGFR)
Calculate eGFR to assess kidney function and CKD stage
Growth Percentile Calculator – Child Growth Charts
Calculate child growth percentiles based on WHO/CDC standards
HbA1c Calculator – Hemoglobin A1c to Glucose Converter
Convert HbA1c to estimated average glucose for diabetes monitoring
HCG Calculator – Pregnancy Hormone Doubling Time
Calculate HCG doubling time to track early pregnancy hormone levels
HIV Risk Assessment Calculator
Calculate HIV transmission risk based on exposure factors
HOMA-IR Calculator – Insulin Resistance Assessment
Calculate HOMA-IR and HOMA-Beta to assess insulin resistance and beta cell function
Ibuprofen Calculator – Safe Dosage Guide
Calculate safe ibuprofen dosage based on weight and age
Implantation Calculator – Estimate Your Implantation Date
Estimate implantation date from conception or ovulation
Intermittent Fasting Calculator – Plan Your Eating Window
Calculate fasting and eating windows for your IF schedule
Jet Lag Recovery Calculator
Calculate jet lag recovery time
Kidney Stone Risk Calculator
Assess your kidney stone risk based on diet and medical factors
LDL Cholesterol Calculator
Calculate LDL cholesterol from total cholesterol, HDL, and triglycerides
LDL/HDL Quotient Calculator
Calculate the ratio between LDL and HDL cholesterol levels
Eyeglass Lens Thickness Calculator
Calculate eyeglass lens thickness based on prescription and frame size
MELD Score Calculator – Model for End-Stage Liver Disease
Calculate MELD score for liver disease severity and transplant priority
Menopause Age Calculator – Estimate Your Menopause Age
Estimate your expected menopause age based on health and lifestyle factors
Menstrual Cycle Calculator – Track Your Period & Ovulation
Calculate menstrual cycle phases and predict next period
Mid-Parental Height Calculator – Predict Child's Adult Height
Predict child's adult height based on parents' heights
Neonate Percentile Calculator – Newborn Growth Charts
Calculate newborn growth percentiles based on gestational age
Newborn Weight Loss Calculator – Track Baby Weight Loss
Calculate newborn weight loss percentage after birth
Nicotine Calculator – Daily Nicotine Intake Estimator
Calculate daily nicotine intake across different products
Osmolar Gap Calculator – Serum Osmolality Assessment
Calculate serum osmolar gap for toxicology assessment
Ovulation Calculator – Fertile Window Tracker
Calculate ovulation date and fertile window for conception planning
Pack Years Calculator – Smoking History Assessment
Calculate pack years to assess smoking-related health risks
Paracetamol Overdose Calculator – Acetaminophen Toxicity Assessment
Assess paracetamol overdose risk and determine treatment needs
Pediatric Dosage Calculator – Safe Medication Doses for Children
Calculate safe medication dosages for children based on body weight
Peptide Dosage Calculator – Reconstitution & Dosing
Calculate peptide reconstitution dosing and vial duration
Girl Growth Percentile Calculator – CDC Growth Charts
Calculate girl growth percentiles using CDC growth charts
Plasma Osmolarity Calculator – Osmolal Gap
Calculate plasma osmolarity and osmolal gap from lab values
Pregnancy Calculator
Calculate pregnancy
Pregnancy Due Date Calculator
Calculate your pregnancy due date from last menstrual period
Pregnancy Week Calculator
Calculate current pregnancy week and trimester
Pregnancy Weight Gain Calculator
Calculate recommended pregnancy weight gain by BMI
Prescription Refill Calculator
Calculate prescription refill date and days supply
Prostate Volume Calculator – Ultrasound Measurement
Calculate prostate volume from ultrasound measurements
QTc Calculator – Corrected QT Interval
Calculate corrected QT interval from ECG measurements
Reverse BMI Calculator – Target Weight from BMI
Calculate target weight from desired BMI and height
Sleep Cycle Calculator – Optimal Sleep Times
Calculate optimal bedtime or wake time based on sleep cycles
Sleep Debt Calculator
Calculate accumulated sleep debt and create a recovery plan
Steps to Lose Weight Calculator
Calculate daily steps needed to achieve your weight loss goals
TDEE Calculator
Calculate your total daily energy expenditure and macro recommendations
Tinetti Balance and Gait Assessment
Assess fall risk using the Tinetti Balance and Gait Assessment
Total Cholesterol Calculator – Lipid Panel Analysis
Calculate total cholesterol and assess cardiovascular risk from lipid components
Transferrin Saturation Calculator – TSAT & Iron Status
Calculate transferrin saturation and assess iron status from lab values
Tube Feed Calculator – Enteral Nutrition Planning
Calculate tube feeding rates for enteral nutrition management
Vertex Distance Calculator – Lens Power Adjustment
Calculate lens power adjustments for vertex distance changes
Vitamin D3 Calculator – D3 Supplementation Dosage
Calculate vitamin D3 supplementation needed to reach target levels
Water Fast Calculator – Fasting Hydration & Weight Loss
Calculate water intake needs and expected outcomes during water fasting
Will I Go Bald Calculator – Hair Loss Risk Assessment
Estimate baldness risk based on genetic and lifestyle factors