Health & Fitness

Calculate Total Daily Energy Expenditure using Mifflin-St Jeor BMR and activity multiplier. Shows calorie targets for weight goals.

Calculate protein, carb, and fat grams from your calorie target. Presets for cutting, maintaining, and bulking.

Calculate pace from distance and time, or finish time from pace and distance. Split table for 5K, 10K, half marathon, and marathon.

Estimate your 1RM via Epley, Brzycki, and Lombardi formulas. Percentage chart for training loads.

Calculate body fat percentage using the U.S. Navy method. Shows lean mass, fat mass, and body fat category.

Calculate daily water needs based on body weight, activity level, and climate. Shows glasses and bottles per day.

Calculate your due date from LMP or conception date. Shows trimester timeline, gestational age, and week-by-week milestones.

Estimate your life expectancy based on age, sex, lifestyle, diet, exercise, sleep, stress, and health factors. See how long you have left and how to improve it.

Build and budget your biohacking longevity stack. Select from 20+ interventions across supplements, testing, devices, lifestyle, and premium categories with live cost tracking.

Calculate how many calories you should eat per day to lose, maintain, or gain weight. Uses the Mifflin-St Jeor equation with activity level and macronutrient breakdown.