Compute children's BMI from height and weight with metric/imperial inputs and a healthy-range readout for growth tracking. See where a 10-year-old sits — free, local, informational only.
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.
Compute healthy weight range with Devine and Robinson formulas from height. See a 170 cm target band instantly — free, local, informational only.
Compute body surface area with four formulas (Mosteller, Du Bois, Haycock, Gehan & George) for medication dosing and physiology. Get m² from height and weight — free, local, informational only.
Convert weight between kg, g, lb, oz, and stone. Supports both metric and imperial systems. Input never leaves your device — everything runs locally in your browser.
Estimate pages from word count and font size — about 500 words/page at 12pt, 600 at 10pt and under. Font-size-only math, no spacing or margin inputs — free, local, no signup.
No — this tool reuses the standard adult bands (under 18.5 / 25 / 30) from height and weight only, with no age or gender inputs. A child's reading is not a percentile; treat it as informational screening and see a pediatrician for growth-chart context.
Height and weight only, in metric (cm/kg) or imperial (ft-in/lbs) — the tool converts between units and shows the healthy weight range for the entered height. A 140 cm child shows a 36.3–48.8 kg healthy range (18.5–24.9 × height²). Measure height barefoot against a wall.
No — informational screening only. Concerning percentiles deserve a pediatrician visit with growth-chart history, not a single online number.
No — computation runs locally in your browser. Health data never leaves your device.
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.
Baby Growth Percentile Calculator
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.
Last updated October 2026