Health & Fitness
Simple wellness calculators with clear educational disclaimers.
BMI Calculator Estimate adult body mass index and healthy BMI weight range. Open Calorie Calculator Estimate daily calories from BMR, activity level, and goal. Open Body Fat Calculator Estimate body fat percentage with a tape-measure method. Open BMR Calculator Estimate basal metabolic rate with the Mifflin-St Jeor equation. Open Ideal Weight Calculator Estimate ideal body weight and compare it with healthy BMI range. Open Pace Calculator Calculate running, walking, or cycling pace from time and distance. Open Army Body Fat Calculator Estimate body fat with a circumference tape method. Open Lean Body Mass Calculator Estimate lean body mass from height, weight, and formula sex. Open Healthy Weight Calculator Find the adult healthy BMI weight range for a height. Open Calories Burned Calculator Estimate exercise calories from MET, body weight, and duration. Open One Rep Max Calculator Estimate one-rep max from weight lifted and reps completed. Open Target Heart Rate Calculator Estimate exercise heart-rate zones from age and intensity. Open Pregnancy Calculator Estimate due date, gestational age, conception date, and trimester. Open Pregnancy Weight Gain Calculator Compare pregnancy weight gain with BMI-based guideline ranges. Open Pregnancy Conception Calculator Estimate conception date from an expected due date. Open Due Date Calculator Estimate pregnancy due date from LMP and cycle length. Open Ovulation Calculator Estimate ovulation date and fertile window from cycle details. Open Conception Calculator Estimate conception timing from cycle and ovulation assumptions. Open Period Calculator Predict upcoming period dates from cycle length and period length. Open Macro Calculator Split daily calories into protein, fat, and carbohydrate grams. Open Carbohydrate Calculator Calculate carbohydrate grams from calories and carb percentage. Open Protein Calculator Estimate protein grams per day from body weight and target factor. Open Fat Intake Calculator Calculate fat grams from calories and fat percentage. Open TDEE Calculator Estimate total daily energy expenditure from BMR and activity. Open GFR Calculator Estimate eGFR with the 2021 CKD-EPI creatinine equation. Open Body Type Calculator Estimate body shape category from shoulder, bust, waist, and hip measurements. Open Body Surface Area Calculator Estimate body surface area with Mosteller and Du Bois formulas. Open BAC Calculator Estimate blood alcohol concentration with a Widmark-style formula. Open