29 tools
Health Calculators
BMI and wellness estimation tools with clear non-medical disclaimers for general reference only.
BMI Calculator
Calculate Body Mass Index from metric or imperial height and weight with BMI category guidance.
Open tool →BMR Calculator
Estimate basal metabolic rate calories using the Mifflin-St Jeor equation from age, sex, height, and weight.
Open tool →TDEE & Calorie Calculator
Estimate total daily energy expenditure and maintenance calories from BMR and activity level.
Open tool →Body Fat Calculator
Estimate body fat percentage using the US Navy circumference method with neck, waist, and hip measurements.
Open tool →Ideal Weight Calculator
Use the Devine formula and a healthy BMI range to estimate a target weight for your height.
Open tool →Calorie & Macro Calculator
Split daily calories into protein, carbohydrate, and fat grams from your chosen macro percentages.
Open tool →Pace Calculator
Calculate running pace per km and mile plus average speed from race distance and finish time.
Open tool →Strength Max Calculator (1RM)
Estimate your max single-rep lift from a working-set weight and rep count using Epley or Brzycki.
Open tool →Army Body Fat Calculator
Estimate body fat percentage and check compliance with US Army AR 600-9 age-based standards.
Open tool →Target Heart Rate Calculator
Calculate max heart rate and training zones for fat burn, cardio, and VO2 max using the Karvonen method.
Open tool →Calories Burned Calculator
Estimate calories burned from activity MET value, body weight, and exercise duration.
Open tool →Due Date Calculator
Estimate pregnancy due date from the last menstrual period using the standard 280-day rule.
Open tool →Protein Calculator
Estimate daily protein grams from body weight and a grams-per-kilogram target.
Open tool →Fat Intake Calculator
Calculate daily fat grams and calories from total calories and a fat percentage target.
Open tool →Carbohydrate Calculator
Calculate daily carbohydrate grams and calories from total calories and a carb percentage.
Open tool →Lean Body Mass Calculator
Estimate lean body mass and fat mass from weight and body fat percentage.
Open tool →Ovulation Calculator
Estimate ovulation date and fertile window from last period date and average cycle length.
Open tool →Conception Date Calculator
Estimate conception date from a pregnancy due date using the standard 266-day gestational rule.
Open tool →Body Surface Area Calculator
Estimate body surface area in square meters using the Du Bois formula from weight and height.
Open tool →GFR Calculator
Estimate glomerular filtration rate and kidney disease stage from age, sex, and serum creatinine using the MDRD equation.
Open tool →Pregnancy Weight Gain Calculator
Estimate recommended total and trimester-to-date pregnancy weight gain from pre-pregnancy BMI and weeks pregnant.
Open tool →Period Calculator
Predict next period date, ovulation date, and fertile window from last period date and cycle length.
Open tool →BAC Calculator
Estimate blood alcohol level from body weight, drink count, drink strength, and time since you started drinking.
Open tool →Body Type Calculator
Classify small, medium, or large body frame from height, wrist circumference, and sex using standard charts.
Open tool →Pregnancy Calculator
Calculate weeks pregnant, trimester, and estimated due date from the last menstrual period date.
Open tool →Overweight Calculator
Assess overweight status from BMI and height, showing weight category and kilograms to reach healthy range.
Open tool →Weight Watchers Points Calculator
Calculate Weight Watchers SmartPoints from calories, fat grams, and fiber grams in a food item.
Open tool →Anorexic BMI Calculator
Assess underweight BMI categories and flag when medical advice may be appropriate. For general reference only.
Open tool →Healthy Weight Calculator
Calculate a healthy weight range in kilograms from height using standard BMI guidelines.
Open tool →