Health & Fitness
BMR, TDEE, nutrition, fitness and wellness calculators
BMR Calculator
Calculate Basal Metabolic Rate calories burned at rest.
TDEE Calculator
Calculate Total Daily Energy Expenditure with activity.
Macro Calculator
Calculate optimal protein, carbs, and fat macros for goals.
Heart Rate Training Zones
Calculate your 5 heart rate training zones.
VO2 Max Estimator
Estimate your VO2 max fitness level from exercise data.
Body Fat Percentage
Calculate body fat % using Navy, BMI, and other methods.
Waist-to-Hip Ratio
Calculate waist-to-hip ratio and associated health risk.
Ideal Weight Calculator
Find ideal weight range using Devine, Robinson, and BMI.
Water Intake Calculator
Calculate recommended daily water intake for your body.
Calorie Deficit Calculator
Calculate calorie deficit or surplus for weight goals.
Sleep Cycle Calculator
Find the best bedtime based on 90-minute sleep cycles.
Ovulation Calculator
Estimate ovulation window and fertile days from cycle.
Pregnancy Due Date
Calculate pregnancy due date from last menstrual period.
Baby Age Calculator
Calculate baby's exact age in weeks, months, and days.
Dog Age Calculator
Convert dog years to human years with breed size factor.
Cat Age Calculator
Convert cat years to human years accurately.
Running Pace Calculator
Calculate running pace, speed, and predicted race times.
Marathon Time Predictor
Predict marathon and half-marathon finish time from pace.
Calories Burned Walking
Calculate calories burned based on weight and distance.
Swimming Calories Burned
Calculate calories burned during swimming workouts.
Protein Intake Calculator
Calculate daily protein needs based on weight and goals.
Carbohydrate Calculator
Calculate carbohydrate needs based on calories and goals.
Fat Intake Calculator
Calculate healthy daily fat intake for your goals.
Alcohol Units Calculator
Calculate alcohol units from drink types and quantities.
BAC Calculator
Estimate Blood Alcohol Content based on drinks and weight.
Fertility Window Calculator
Calculate fertile days and fertility window from cycle.
Blood Pressure Categories
Check blood pressure ranges and health categories.
Cholesterol Levels Guide
Understand cholesterol numbers and healthy ranges.
Vitamin D Calculator
Estimate vitamin D needs and recommended sun exposure.
Steps to Distance Converter
Convert daily step count to km or miles walked.
Cycling Power Zones
Calculate cycling power training zones from your FTP.
BMI for Children
Calculate BMI for children ages 2–19 with percentiles.
Healthy Weight Range
Find healthy weight range for your height using BMI.
Fiber Intake Calculator
Calculate recommended daily dietary fiber intake.
Meditation Timer Guide
Breathing exercises and meditation session guidance.