Category
Free Online Health Calculators and Tools
7 calculators
Calculate your key health numbers for free, from body mass index and daily calorie needs to basal metabolic rate and macronutrient split. Check your body roundness index (BRI) for another view of your weight, or use the pregnancy week and ovulation calculators to plan ahead. Every calculator is free and needs no sign-up. Results are for information only and are not medical advice.
- Body Roundness Index (BRI) Calculator Calculate Body Roundness Index (BRI), waist-to-height ratio, and a short visual interpretation using height and waist circumference.
- Ovulation Calculator Calculate the estimated ovulation day and fertile window based on the last menstrual period and cycle length.
- Calorie Needs Calculator Calculate your recommended daily calorie intake and macronutrient distribution based on your goal.
- BMI / Body Mass Index Calculator Calculate your BMI, adult weight category, and healthy weight range based on your height and weight.
- BMR / Basal Metabolic Rate Calculator Calculate the estimated energy your body uses for basic vital functions at complete rest.
- Macronutrient Calculator Calculate protein, carbohydrate, and fat grams based on your daily calorie target.
- Pregnancy Week Calculator Calculate the pregnancy week based on the last menstrual period, estimated due date, ultrasound, conception date, or IVF transfer date.