Estimate a child’s possible blood types from parents’ ABO and Rh factors. Get instant % chances for A, B, AB, O, Rh+ and Rh−.

Check your child’s height percentile (0–5 years) using the WHO LMS method. Enter age, sex, and height to get percentile, z-score, and band.

Calculate your IQ percentile using μ=100 and σ=15 or 16. See percentile plus percent above and below instantly with live results.

Estimate your child’s future adult height using Khamis–Roche or mid-parental method. Works in cm/kg or ft/in/lb. Fast & free.

Free cholesterol ratio calculator. Enter total, HDL, LDL and triglycerides to get TC/HDL, LDL/HDL, TG/HDL, non-HDL and estimated LDL in seconds.

Calculate your A Body Shape Index (ABSI) from height, weight and waist circumference. Understand your body shape risk instantly with this free online ABSI calculator.

Use our FFMI calculator to estimate fat-free mass, FFMI, and normalized FFMI from your weight, body fat percentage, and height. Instantly see your muscle category.

Free waist-to-height ratio calculator. Enter your height and waist in cm or inches to get WHtR, health risk category, and simple interpretation.

Calculate adjusted body weight (AjBW) using Robinson IBW + 0.4× rule. Easy AjBW calculator for obese patients, ideal body weight and dosing weight in kg or lb.