Free Health Calculators

Pick a tool below.

Free BMI calculator with Asian-Pacific and WHO categories. Check your weight status and health risk instantly.

Calculate your estimated due date and trimesters from your last menstrual period.

Estimate your ovulation day and fertile window from your cycle length.

Calculate your total daily energy expenditure and calorie targets for weight loss or maintenance.

Check your child's weight-for-age percentile using WHO growth standards.

Convert HbA1c to estimated average glucose (eAG) in mg/dL and mmol/L and see your diabetes range.

Calculate a child's paracetamol syrup dose by weight and syrup strength.

Enter your systolic and diastolic blood pressure to see whether it is normal, elevated or high, with clear next steps.

Estimate your kidney function (eGFR) from serum creatinine, age and sex using the CKD-EPI 2021 equation.

Check your risk of type 2 diabetes with the Indian Diabetes Risk Score, based on age, waist, activity and family history.

Calculate your waist-to-height ratio, a simple measure of belly fat and health risk, with cm and inch support.

Find your healthy weight range for your height using Asian BMI cutoffs, in kg and lb, plus the Devine formula.

Estimate how much water you should drink daily based on weight, activity and climate, in litres, cups and fl oz.

Estimate your body fat percentage from height, neck, waist and hip measurements. No scale needed.

Calculate LDL cholesterol and non-HDL cholesterol from your total cholesterol, HDL and triglycerides, in mg/dL or mmol/L.

Estimate how many grams of protein you need per day based on weight and goal: general health, older age, weight loss or muscle gain.

Convert blood glucose, cholesterol and triglycerides between mg/dL and mmol/L, and HbA1c between % and mmol/mol.