Tools & Utilities Directory
Browse fast, client-side browser utilities designed for maximum privacy and zero latency.
BMI Calculator
Calculate Body Mass Index (BMI), health risk category, and healthy weight range for adults and children according to WHO guidelines.
Body Fat Percentage Calculator
Estimate your body fat percentage and fat-free lean body mass using the scientifically validated US Navy circumference method.
BMR Calculator
Calculate Basal Metabolic Rate (BMR) to find out how many calories your body burns at complete rest using the Mifflin-St Jeor equation.
TDEE Calculator
Calculate Total Daily Energy Expenditure (TDEE) based on your daily physical activity level, exercise habits, and metabolic rate.
Calorie Calculator
Calculate daily caloric requirements to maintain, lose, or gain weight safely with projected completion dates.
Ideal Weight Calculator
Calculate optimal healthy body weight ranges based on gender, height, and age using clinical medical formulas (Devine, Robinson, Miller, Hamwi).
Water Intake Calculator
Calculate your ideal daily water hydration target based on body weight, climate environment, and exercise intensity.
Macro Calculator
Calculate daily macronutrient targets (grams of protein, carbohydrates, and healthy fats) tailored to your fitness goals.
Heart Rate Zone Calculator
Calculate your 5 cardiovascular training zones (Active Recovery, Fat Burn, Aerobic, Anaerobic, and VO2 Max) based on age and resting heart rate.
One Rep Max (1RM) Strength Calculator
Estimate your maximum single-repetition lift capacity (1RM) using the Brzycki, Epley, and Lombardi formulas along with workout percentage breakdowns (50%-95%).
Intermittent Fasting Schedule & Window Calculator
Plan and schedule intermittent fasting windows (16:8, 18:6, 20:4 Warrior, and OMAD) with meal time reminders and cellular autophagy milestones.
Pregnancy Due Date & Trimester Calculator
Estimate estimated delivery date (EDD), current gestational age in weeks and days, and trimester milestones using Naegele's rule.