Health & Fitness calculators
Body metrics, metabolism, and reproductive health estimates for wellness planning.
BMI Calculator
Body mass index with metric and imperial units
BMR & Calorie Calculator
Daily calorie needs by activity level
TDEE Calculator
Maintenance calories from BMR and activity
BMR Calculator
Basal metabolic rate with formula options
Body Fat Percentage Calculator
Navy method and BMI body fat estimates
Ideal Weight Calculator
Ideal weight range from clinical formulas
Macro Calculator
Protein, carb, and fat targets from TDEE and goals
Water Intake Calculator
Daily hydration from weight, activity, and climate
Running Pace Calculator
Pace, speed, finish time, and race splits
Heart Rate Zone Calculator
Training zones via Fox, Tanaka, or Karvonen
Pregnancy Due Date Calculator
Due date from LMP, conception, ultrasound, or IVF
Ovulation Calculator
Fertile window and ovulation day estimates
Period Calculator
Next period and cycle calendar estimates
Sleep Calculator
Bedtime and wake times from sleep cycles