Health & Fitness Calculators
Data-driven tools to optimize your health, fitness, and recovery. No account required. Your data stays in your browser.
✨ Total Wellness Optimization Guide
A comprehensive guide to balancing nutrition, exercise, sleep, and mental health for peak performance.
BMI Calculator
Calculate your Body Mass Index with WHO health classifications.
Calorie Calculator
Find your daily calorie needs based on activity level and goals.
Macro Split Calculator
Get your ideal protein, carbs, and fat ratios for your goals.
Heart Rate Zones
Calculate target heart rate zones for optimal training intensity.
Sleep Cycle Calculator
Optimize your bedtime to wake up refreshed based on 90-minute cycles.
One Rep Max (1RM)
Estimate your max lift from submaximal loads for safe progression.
Body Fat Calculator
US Navy method — just a tape measure, ±3-4% accurate.