Health Tools

Browse every health tool on the site. Each one runs entirely in your browser and is free to use.

8 tools 18 categories Free, no sign-up

Body Fat Calculator

Estimate body fat percentage using the US Navy method and circumference measurements.

Guided breathing exercises with visual animations for relaxation and focus.

Calculate daily calorie needs based on age, weight, height, and activity level.

Calculate heart rate training zones for cardio, fat burn, and peak performance.

Calculate daily macronutrient targets for protein, carbs, and fat.

Calculate estimated due date and pregnancy timeline from last menstrual period.

Calculate optimal bedtimes and wake times based on 90-minute sleep cycles.

Calculate recommended daily water intake based on weight and activity.