Practical Health Tools
Simple calculators with transparent methods and clear limits. Use them to learn, not to diagnose.
BMI Calculator
See how weight relates to height using a standard adult screening measure.
Use tool →02BMR Calculator
Estimate energy your body uses at rest.
Use tool →03TDEE Calculator
Explore an activity-adjusted estimate of daily energy use.
Use tool →04Calorie Calculator
Estimate maintenance calories and cautious deficit or surplus ranges.
Use tool →05Protein Calculator
Estimate an educational daily protein range from weight, activity, and goal.
Use tool →06Body Fat Calculator
Estimate adult body-fat percentage with a transparent circumference method.
Use tool →07Water Intake Reference Tool
Explore total-water references and the contexts that can change individual needs.
Use tool →08Sleep Calculator
Plan a sleep window with bedtime, wake time, and expected time to fall asleep.
Use tool →Calculator results are general education. Your circumstances may change what a number means. Each tool explains its assumptions and links to its source.