Neonatology Calculators

16 calculators & risk scores

Browse 16 Neonatology clinical calculators and risk scores used in everyday UK practice. Every tool runs entirely in your browser — enter the values and get instant scoring, colour-coded interpretation bands and a link to the underlying guideline or publication. ClinCalc Pro is free, needs no sign-up, and is built for working clinicians.

These neonatology tools span Neonatal Assessment, Neonatal Jaundice, Neonatal Abstinence Syndrome, Respiratory Distress, Gestational Age, Neonatal Haematology and more.

APGAR Score

Standardised assessment of newborn condition at 1 and 5 minutes after birth. Five parameters scored 0–2. Score ≥7 = good condition; 4–6 = moderate concern; ≤3 = requires immediate resuscitation. Does NOT predict long-term neurological outcome.
Hour-Specific Bilirubin Risk Assessment (Bhutani Nomogram)

Plots total serum bilirubin (TSB) against postnatal age in hours to categorise risk of severe neonatal hyperbilirubinaemia in infants ≥35 weeks. Based on Bhutani nomogram. Used to guide phototherapy and exchange transfusion decisions.
Finnegan Neonatal Abstinence Scoring Tool (FNAST)

21-item scoring system assessing severity of neonatal abstinence syndrome (NAS) in neonates born to mothers using opioids or other substances. Scored every 3–4 hours. Total score guides pharmacological treatment initiation and weaning.
Silverman-Andersen Retraction Score

5-component bedside scoring system for assessing severity of respiratory distress in neonates. Each item scored 0–2. Total score 0 = no distress; 10 = severe distress. Used to guide oxygen supplementation and ventilatory support decisions.
New Ballard Score — Gestational Age Assessment

Neuromuscular and physical maturity scoring system to estimate gestational age in neonates when dates are uncertain. Consists of 6 neuromuscular + 6 physical maturity criteria. Total score correlates to gestational age in weeks.
Rebound Hyperbilirubinemia Risk Score

Predicts risk of significant rebound hyperbilirubinaemia after discontinuation of phototherapy in neonates ≥35 weeks. Low-risk infants may not need post-phototherapy bilirubin checks. Identifies infants safe for early discharge after phototherapy.
Neonatal Partial Exchange Transfusion for Polycythaemia

Calculates volume of blood to exchange with normal saline to reduce haematocrit in neonatal polycythaemia. Polycythaemia defined as venous Hct ≥65% (Hb ≥220 g/L). Treatment indicated if symptomatic or Hct ≥70%.
Surgical Apgar Score (SAS)

10-point intraoperative risk score predicting postoperative major complications and death. Based on estimated blood loss, lowest mean arterial pressure, and lowest heart rate during surgery. Score 0–10; lower score = higher risk. Applicable across surgical specialties.
Neonatal Jaundice — Bhutani Nomogram Risk

Assesses risk zone of neonatal bilirubin level based on age in hours. Guides phototherapy and exchange transfusion decisions per NICE/AAP.
CPAP Initiation Criteria (Neonatal)

Identifies neonates requiring CPAP or respiratory support based on clinical and gestational criteria. Used in NICU and delivery suite.
Neonatal Early-Onset Sepsis (EOS) Calculator

Estimates risk of early-onset neonatal sepsis (EOS) using maternal and clinical factors. Based on Kaiser Permanente model.
Silverman-Anderson Retraction Score

Assesses respiratory distress severity in neonates using five clinical signs of chest retraction. Score 0 = no distress; 10 = maximal distress.
Therapeutic Hypothermia Criteria (Neonatal HIE)

Identifies neonates with hypoxic ischaemic encephalopathy (HIE) eligible for therapeutic hypothermia (cooling therapy). TOBY/NICE criteria.
Apgar Score (Neonatal)

Standardised assessment of newborn condition at 1 and 5 minutes after birth. Guides immediate resuscitation decisions.
Neonatal Hypoglycaemia Risk Assessment

Identifies neonates at high risk for hypoglycaemia requiring glucose monitoring. Based on BAPM/NICE guidelines.
Modified Bell's Staging for Necrotising Enterocolitis

Modified Bell's classification (Walsh & Kliegman 1986) of necrotising enterocolitis severity in neonates. Stages IA/IB (suspected) → IIA/IIB (definite, mild/moderate) → IIIA/IIIB (advanced, ill/perforated).