Health & Fitness Tools Directory
Explore our complete library of private, browser-based calculators designed for accurate fitness and nutritional planning.
Energy & Metabolism
Calculate your baseline energy requirements and daily calorie burn.
BMR Calculator
Find your Basal Metabolic Rate — the calories burned at complete rest via Mifflin-St Jeor & Harris-Benedict.
TDEE Calculator
Calculate Total Daily Energy Expenditure accounting for daily movement, workouts, and activity level.
Calorie Calculator
Personalized daily calorie targets customized for weight loss, maintenance, or muscle building.
Intermittent Fasting Calculator
Plan daily fasting windows (16:8, 14:10, 18:6, OMAD) or weekly schedules (5:2, ADF) with meal timing.
Body Composition & Weight
Analyze body mass index, body fat percentages, and healthy weight ranges.
BMI Calculator
Check your Body Mass Index with standard WHO / CDC adult and child weight category classifications.
Body Fat Calculator
Estimate body fat percentage using the trusted U.S. Navy circumference-based formula.
Ideal Weight Calculator
Compare ideal body weight estimates from Devine, Robinson, Miller, and Hamwi equations.
Weight Loss Planner
Map out a realistic, healthy timeline and weekly deficit to achieve your target weight safely.
FFMI Calculator
Calculate Fat-Free Mass Index and height-normalized FFMI to benchmark muscular development against natural genetic standards.
One Rep Max Calculator
Estimate 1RM, calculate training percentages, strength-to-bodyweight standards, and symmetric barbell plate loading.
Nutrition & Hydration
Optimize macronutrient ratios, dietary protein, and daily fluid intake.
Macro Calculator
Determine optimal daily grams and percentages for protein, carbohydrates, and fats.
Protein Calculator
Calculate evidence-based daily protein needs based on training intensity and body composition.
Water Intake Calculator
Estimate personalized daily water needs adjusted for climate, exercise duration, and body weight.
Pregnancy & Women's Health
Evidence-based pregnancy dating, gestational milestones, and trimester planning.
Due Date Calculator
Calculate your estimated due date from last period (LMP), conception, IVF/FET, or ultrasound with week milestones.
Ovulation Calculator
Identify your likely fertile window, upcoming ovulation date, and key testing milestones based on your cycle history.
100% Private & Client-Side Computation
None of your biometric measurements, height, weight, or fitness targets are sent to remote servers or stored in any database. Everything runs directly inside your device's browser.