Health Calculators
Educational wellness calculators for body metrics, nutrition planning, heart-rate zones, sleep, and general estimates.
20 health calculators
Each page includes a focused input form, result text, copy button, structured FAQ, and related tool links. Choose a tool below and enter your own values.
BMI Calculator
Calculate body mass index from height and weight.
BMR Calculator
Estimate basal metabolic rate from age, height, weight, and reference sex using Mifflin-St Jeor.
Blood Pressure Category Tool
Classify a blood pressure reading into general adult reference categories for education.
Body Fat Calculator
Estimate body fat percentage from waist, neck, height, and optional hip measurement.
Body Surface Area Calculator
Estimate body surface area from height and weight using the Mosteller formula.
Calorie Calculator
Estimate daily calories using BMR formula.
Calories Burned Estimator
Estimate calories burned from MET value, body weight, and activity duration for planning.
Heart Rate Zone Calculator
Calculate training heart-rate zones from age and resting heart rate using a reserve estimate.
Ideal Weight Calculator
Estimate ideal body weight using common adult reference formulas for education only.
Macro Calculator
Estimate protein, carbs, and fats from a calorie target and macro percentage split.
Ovulation Calculator
Estimate a likely ovulation window from cycle length and last period date for education only.
Pregnancy Due Date Calculator
Estimate a pregnancy due date from last menstrual period or conception date for planning.
Protein Intake Calculator
Estimate daily protein target from body weight and grams per kilogram preference.
Running Pace Calculator
Calculate running pace, speed, and estimated finish time from distance and time.
Sleep Calculator
Estimate bedtimes or wake times based on 90-minute cycles and sleep onset time.
TDEE Calculator
Estimate total daily energy expenditure from BMR and activity level for general planning.
Target Calories Calculator
Estimate daily calories for maintaining, losing, or gaining weight based on TDEE and goal size.
Waist to Height Ratio Calculator
Calculate waist-to-height ratio for a quick educational body-measurement reference.
Waist to Hip Ratio Calculator
Calculate waist-to-hip ratio from body measurements and show a simple reference category.
Water Intake Calculator
Estimate daily water intake from body weight and activity minutes as a wellness guide.