Health & Fitness Calculators - BMI, Calories & More

Educational health estimates with the formula and its limits spelled out. These tools are not medical advice: speak to a qualified professional about your health.

BMI Calculator
BMI estimate with adult and child limitations.
Calorie Calculator
Daily energy estimate using a stated formula.
Ideal Weight Calculator
Formula-based weight range with limitations.
Water Intake Calculator
General hydration estimate, not medical advice.
Body Fat Calculator
Estimate body fat using a selected method.
Macronutrient Calculator
Macro split from calorie target and goal.
Pregnancy Due Date Calculator
Estimated due date and pregnancy week.
Ovulation Calculator
Ovulation day, fertile window and next period.
Protein Intake Calculator
Daily protein range by weight and activity.
Target Heart Rate Calculator
Heart-rate zones by age and resting rate.
Running Pace Calculator
Pace, speed and projected race times.