11 free calculators
Health & Fitness Calculators
Free online health calculators for BMI, calories, pregnancy due dates, sleep cycles, body fat, macros, water intake, heart rate zones, and ovulation tracking. All calculators are instant, accurate, and free.
Ad Space — 90px
BMI Calculator
Find your body mass index
Calorie Calculator
Daily calorie & TDEE needs
Steps to Calories
Calories burned from steps
Pregnancy Calculator
Due date & weeks pregnant
Sleep Calculator
Best times to sleep & wake up
Ideal Weight
Healthy weight for your height
Body Fat %
Navy method body fat estimate
Macro Calculator
Protein, carb & fat targets
Water Intake
Daily hydration goal
Heart Rate Zones
Training zones by age
Ovulation Calculator
Fertile window & cycle tracker