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10 calculators
Paediatric practice works from growth charts and age-specific norms rather than adult cutoffs, and these calculators embed that logic — Apgar scoring, head-injury rules, croup severity, dehydration assessment, and early-warning thresholds. They are applied in delivery suites, emergency departments, and general wards, with interpretation always tied to the child's exact age and weight. Adult thresholds should never be transferred to a child.
This page groups by clinical area, so the tools below are the ones this setting reaches for — the subject-focused view of the same calculators lives on the categories pages, the full alphabetical list collects everything in one place, and the comparison tool lines up three tools side by side when two of them look interchangeable.
Calculates BMI for children and adolescents (ages 2–20) and classifies weight status using CDC 2000 BMI-for-age percentile references.
PediatricsScores newborn condition at 1 and 5 minutes using the five Apgar signs (Appearance, Pulse, Grimace, Activity, Respiration), each scored 0–2 for a total of 0–10 (Apgar 1953). Higher scores indicate better transition to extrauterine life.
PediatricsAge-modified Glasgow Coma Scale for infants and children, using the same eye (1–4) and motor (1–6) components as the adult scale but an age-appropriate verbal response (1–5). Sum ranges 3–15; lower scores indicate more severe impairment of consciousness.
PediatricsScores pediatric trauma severity across six components (weight, airway, systolic blood pressure, mental status, open wounds, skeletal injury), each scored +2 (minor), +1 (moderate), or −1 (severe), for a total of −6 to +12. Lower scores predict higher mortality and the need for transfer to a pediatric trauma center.
PediatricsScores croup severity using the five-component Westley scale (1978): level of consciousness, cyanosis, stridor, air entry, and retractions, summed from 0–17. Higher scores indicate more severe upper-airway obstruction and impending respiratory failure.
PediatricsRisk-stratifies children with minor blunt head trauma for clinically important traumatic brain injury (ciTBI) using the age-specific PECARN decision rule (Kuppermann 2009). Two separate rules apply for children under 2 years and children 2 years and older; the risk of ciTBI is < 0.02–0.05% when none of the rule's predictors are present.
PediatricsRisk-stratifies febrile infants aged 0–60 days for serious bacterial infection (SBI) using the Rochester criteria (Jaskiewicz 1994). An infant who meets all seven criteria is considered LOW RISK and can be managed with careful outpatient follow-up; failure to meet any criterion warrants a full sepsis evaluation and admission.
PediatricsPredicts clinically important dehydration (≥ 5% body weight) in children with gastroenteritis using the validated 4-item Gorelick scale: capillary refill > 2 seconds, dry mucous membranes, absent tears, and ill/toxic appearance. Three or more of four findings predicts ≥ 5% dehydration.
PediatricsDetermines the age-based 5th-percentile systolic blood pressure threshold below which hypotension is defined in children (PALS/AAP): < 60 mmHg in term newborns to 1 month, < 70 mmHg in infants 1–12 months, < 70 + (2 × age in years) in children 1–10 years, and < 90 mmHg beyond 10 years. Compares a measured systolic blood pressure against the threshold.
PediatricsScores clinical deterioration risk on pediatric wards using the Brighton Pediatric Early Warning Score (Monaghan 2005): Behavior, Cardiovascular, and Respiratory domains (each 0–3) plus 1 additional point for persistent parent or staff concern, for a total of 0–10. Higher scores trigger escalating observation and urgent review.
Pediatrics