Free Medical Tools & Calculators
Accurate, free health calculators with trusted medical guidance. Educational only — not a substitute for professional medical advice.
BMI Calculator
Free Body Mass Index (BMI) calculator from weight and height. Find your category (underweight, normal, overweight, obese) with trusted medical guidance.
Pregnancy Due Date Calculator
Calculate your estimated due date and gestational age in weeks from your last menstrual period (LMP), and see your current trimester.
Ideal Weight Calculator
Calculate your ideal weight by height and gender, and see your healthy weight range based on BMI and the Devine formula.
Daily Calorie Needs Calculator
Calculate your daily calorie needs and Basal Metabolic Rate (BMR) by age, gender, weight, height, and activity level.
Daily Water Intake Calculator
Calculate how many liters of water your body needs daily based on your weight and activity level, with trusted hydration guidance.
Ovulation & Fertile Days Calculator
Calculate your expected ovulation day and fertile window from your last period date and cycle length to boost your chances of pregnancy.
Body Fat Percentage Calculator
Calculate your body fat percentage with the US Navy method from waist, neck, and height measurements, with result categories.
Target Heart Rate Calculator
Calculate your maximum heart rate and target exercise zones (fat burn, cardio) by age to train safely and effectively.
Smoking Cost Calculator
Calculate what smoking costs you in Jordanian Dinars monthly, yearly, and over the years, and how many cigarettes you have smoked — numbers that help you decide to quit.
Need a doctor?
These tools give general guidance. For an accurate assessment, book a verified doctor on ClinicsJo.