🏥 Health Calculators

14 free evidence-based health and fitness calculators.

Body mass index and weight category.

Calorie Calculator

Daily calorie needs (TDEE) by goal.

Basal metabolic rate using 4 formulas.

Body Fat Calculator

US Navy circumference method.

Ideal Weight Calculator

5 formula comparison.

Water Intake Calculator

Daily hydration needs by weight and activity.

Heart Rate Zone Calculator

5 training zones with Karvonen formula.

Macros Calculator

Protein, carbs, and fat targets by goal.

Pregnancy Due Date Calculator New

EDD from LMP or conception date.

Sleep Calculator New

Best bedtime and wake-up times.

Steps to Calories New

Calories burned by step count.

Pace Calculator New

Running pace, time, and distance.

Ovulation Calculator New

Fertile window from cycle length.

One Rep Max Calculator New

1RM estimate from reps and weight.