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Health & Fitness Calculators
Health & Fitness Calculators
BMI, BMR, TDEE, Calories & health metrics
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42
Body & Weight
14
Diet & Fitness
15
Clinical & Risk
12
BMI Calculator
Body Mass Index with category & ideal weight
Popular
BMR Calculator
Basal Metabolic Rate (Mifflin-St Jeor)
TDEE Calculator
Total Daily Energy Expenditure
Water Intake Calculator
Daily hydration requirement
Heart Rate Zones
Target heart rate for every fitness zone
Age Calculator
Exact age in years, months, days & more
Born
Today
Calories Burned Calculator
Calories burned during exercise
kcal
Sleep Calculator
Optimal bedtimes based on sleep cycles
Z
z
Macro Calculator
Daily protein, carbs & fat targets
Pregnancy Due Date
EDD and trimester tracker
Ideal Weight Calculator
Multiple formula ideal body weight
Ovulation & Fertile Window
Estimate peak fertile days based on cycle length
Blood Pressure Classifier
Classify your BP reading and understand the risk level
BAC Calculator
Blood Alcohol Content estimator
Waist-to-Hip Ratio
Cardiovascular risk indicator
IBW — Ideal Body Weight
Target weight by height using clinical formulas
Vitamin D Deficiency Check
Estimated Vitamin D level & supplementation
Lung Capacity (FVC) Estimator
Forced Vital Capacity prediction
Body Fat % Calculator (Navy Method)
Estimate body fat percentage using measurements
Popular
Protein Intake Calculator
Daily protein requirement based on weight, activity and goal
Smoking Cost Calculator
Money wasted on cigarettes and health risk assessment
Child Adult Height Predictor
Predict child's adult height from parents' heights
Diabetes Risk Score
ADA-based type 2 diabetes risk assessment
Sleep Debt Calculator
Cumulative sleep deficit and recovery plan
Anemia Risk Checker
Hemoglobin level interpretation and severity classification
Body Surface Area Calculator
BSA using Mosteller & DuBois formulas (used in drug dosing)
Cholesterol Ratio Calculator
Total/HDL ratio, LDL/HDL ratio & cardiovascular risk
Calorie Deficit Calculator
Daily calories & timeline to reach your goal weight
kcal
One Rep Max (1RM) Calculator
Estimate your max lift from sub-maximal reps
New
Running Pace / Race Predictor
Pace calculator and race time predictions (5K to Marathon)
New
Body Recomposition Planner
Simultaneous fat loss and muscle gain — calories + macros
VO2 Max Estimator
Estimate cardiovascular fitness from run/walk data
Lean Body Mass Calculator
Calculate fat-free mass using multiple formulas
Calorie Intake by Goal Timeline
Daily calories needed to hit your target weight by a date
Water + Electrolyte Calculator
Daily water and electrolyte needs based on activity and climate
Intermittent Fasting Window Calculator
Calculate eating & fasting windows for 16:8, 18:6, 20:4, OMAD protocols
New
Waist-to-Height Ratio Calculator
Better predictor of cardiovascular risk than BMI — keep waist below half your height
New
Pregnancy Weight Gain Calculator
Track pregnancy weight gain against IOM guidelines
Breastmilk / Formula Calculator
Calculate daily milk intake and feeding schedule for babies
Steps to Calories Calculator
Convert daily steps to calories burned and distance
BAC & Sober Time Calculator
Detailed blood alcohol content with drink types and legal limits
Period & Menstrual Cycle Calculator
Predict next 6 periods, fertile windows, and PMS dates