Calculate the Child-Pugh score to grade chronic liver disease / cirrhosis severity and estimate perioperative mortality. Five parameters scored 1–3 each (total 5–15): Total bilirubin (<2 mg/dL =1, 2–3 =2, >3 =3) — supports mg/dL or µmol/L input (auto ÷17.1); Serum albumin (>3.5 g/dL =1, 2.8–3.5 =2, <2.8 =3); INR (<1.7 =1, 1.7–2.3 =2, >2.3 =3); Ascites (absent =1, slight/controlled =2, moderate–severe =3); Hepatic encephalopathy (none =1, grade I–II =2, grade III–IV =3). Classes: A (5–6) well-compensated (1-y ~100%, 2-y ~85%); B (7–9) significant compromise (1-y ~80%, 2-y ~60%); C (10–15) decompensated (1-y ~45%, 2-y ~35%). Derived from Pugh et al. 1973 (Br J Surg) and the original Child-Turcotte classification. Not medical advice.
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Key facts
Category
Health
Input types
number, select
Output type
json
Sample coverage
4
API ready
Yes
Overview
Calculate a Child-Pugh score from bilirubin, albumin, INR, ascites, and hepatic encephalopathy findings. The tool returns a total score from 5 to 15, Child-Pugh class A, B, or C, and the associated approximate one- and two-year survival estimates. It is not medical advice.
When to use
Assess the severity of chronic liver disease or cirrhosis using five standard clinical parameters.
Convert a bilirubin value entered in µmol/L to mg/dL for Child-Pugh scoring.
Review the score class and approximate survival estimates for clinical discussion or documentation.
How it works
1Enter total bilirubin and select either mg/dL or µmol/L as the unit.
2Enter serum albumin in g/dL and the INR value.
3Select the applicable ascites and hepatic encephalopathy categories.
4The tool assigns 1 to 3 points for each parameter, adds the points, and returns the Child-Pugh class and approximate survival estimates.
Use cases
Clinicians and trainees reviewing cirrhosis severity from laboratory and clinical findings.
Medical documentation and case discussions requiring a standardized Child-Pugh class.
Checking how bilirubin units and changes in ascites or encephalopathy affect the total score.
Examples
1. Decompensated cirrhosis with a Class C score
Clinician
Background
A patient has markedly abnormal liver function results, moderate ascites, and grade III–IV hepatic encephalopathy.
Problem
Calculate the total Child-Pugh score and identify the corresponding severity class.
How to use
Enter bilirubin 3.5 mg/dL, albumin 2.5 g/dL, INR 2.5, select Moderate to severe ascites, and select Grade III–IV encephalopathy.
The tool converts bilirubin to approximately 3.51 mg/dL and returns a total of 8, Class B, with approximate one-year survival of 80% and two-year survival of 60%.