Compare baby weight and height against WHO median references by age and sex, shown as % above or below the median — a reference comparison, not clinical percentiles. Monitor your childs growth compared to population medians. Health data never leaves your device — every calculation runs locally in your browser.
Calculates Basal Metabolic Rate using the Mifflin-St Jeor equation with age, sex, height, and weight. Nutritionists use it for diet planning. Health data never leaves your device — every calculation runs locally in your browser.
Computes Body Mass Index from metric or imperial height and weight inputs, categorizing the result into underweight, normal, overweight, and obese, with a healthy weight range for your height. Health data never leaves your device — every calculation runs locally in your browser.
Calculate body fat percentage using the US Navy circumference method. Enter waist, neck, height, and hip measurements. Health data never leaves your device — every calculation runs locally in your browser.
Calculate customer churn rate by dividing customers lost by total customers. Monitor retention health for your subscription business. Numbers never leave your device — every calculation runs locally in your browser.
Compare buy net cost against rent total over a timeframe you set, from home price, down payment, mortgage rate, and monthly rent. Figures never leave your device — every calculation runs locally in your browser.
How far weight and height sit above or below the WHO median for the same age and sex, with linear interpolation between reference ages. These are reference comparisons — not clinical percentiles, which need LMS z-score tables.
+0% matches the reference median exactly. The defaults (12-month boy, 75 cm, 10 kg) read about −1.3% height and −2.0% weight against medians of 76 cm and 10.2 kg. Consistent growth near the median line is what matters most.
Birth to 60 months, using reference points at 0, 6, 12, 24, 36, 48, and 60 months with interpolation between them. Ages past 60 months reuse the 60-month reference, so track older children on your pediatrician's chart.
Not necessarily. What matters is consistent growth over time, not a single measurement. A baby growing steadily at the 25th percentile is healthy. Consult your pediatrician for concerns.
No. All calculations run locally in your browser. No health data is transmitted or stored.
Child Height Predictor
Estimate a child's adult height from parents' heights with the mid-parental method. Get a ±8 cm range in seconds — free, local, estimate only.
Pregnancy Due Date Calculator
Estimate due date from last period with trimester milestones. Get the 40-week roadmap instantly — free, local, informational only.
Last updated October 2026