Health & Fitness
TDEE, macro, pace, body fat, and water intake calculators for health and fitness goals.
Browse all 7 tools in Health & Fitness. Each tool runs entirely in your browser with no account required.
TDEE Calculator
Calculate Total Daily Energy Expenditure using Mifflin-St Jeor BMR and activity multiplier. Shows calorie targets for weight goals.
Use tool →Macro Calculator
Calculate protein, carb, and fat grams from your calorie target. Presets for cutting, maintaining, and bulking.
Use tool →Running Pace Calculator
Calculate pace from distance and time, or finish time from pace and distance. Split table for 5K, 10K, half marathon, and marathon.
Use tool →One Rep Max (1RM) Calculator
Estimate your 1RM via Epley, Brzycki, and Lombardi formulas. Percentage chart for training loads.
Use tool →Body Fat Calculator (Navy Method)
Calculate body fat percentage using the U.S. Navy method. Shows lean mass, fat mass, and body fat category.
Use tool →Daily Water Intake Calculator
Calculate daily water needs based on body weight, activity level, and climate. Shows glasses and bottles per day.
Use tool →Pregnancy Due Date Calculator
Calculate your due date from LMP or conception date. Shows trimester timeline, gestational age, and week-by-week milestones.
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