Child-Pugh Score Calculator — Liver Cirrhosis Severity
The Child-Pugh score classifies the severity of liver cirrhosis into three classes (A, B, C) using five clinical parameters: total bilirubin, serum albumin, INR, ascites, and degree of hepatic encephalopathy. Enter the values to get the score and associated survival estimates.
mg/dL
g/dL
Ascites
Hepatic encephalopathy
Class A — score range 5 (best) to 15 (worst)
- 1
Lab parameter scores
Bilirubin 1 + Albumin 1 + INR 1 = 3Each parameter scored 1 (best) to 3 (worst) by published threshold. - 2
Clinical parameter scores
Ascites 1 + Encephalopathy 1 = 2 - 3
Total Child-Pugh score
3 + 2 = 5
How does this calculator work?
The Child-Pugh score (5–15) sums points for bilirubin, albumin, INR, ascites, and encephalopathy (each 1–3). Class A (5–6) = well-compensated (~100% 1-year survival); Class B (7–9) = significant compromise (~80%); Class C (10–15) = decompensated (~45%). Use alongside clinical judgement.
Formula
How this is calculated
The Child-Pugh score (originally Child-Turcotte, later modified by Pugh) quantifies hepatic functional reserve in cirrhosis. Each of five parameters is scored 1 (best) to 3 (worst) and summed for a total between 5 and 15.
Laboratory parameters reflect two key functions: bilirubin measures the liver's capacity to excrete conjugated bile pigments, while albumin and INR (a marker of coagulation factor synthesis) reflect synthetic function. Clinical parameters — ascites and encephalopathy — represent decompensation events. A total of 5–6 puts the patient in Class A (well-compensated, 1-year survival ~100%, 2-year ~85%); 7–9 is Class B (significant functional compromise, ~80%/60%); 10–15 is Class C (decompensated, ~45%/35%).
Survival figures cited here are population-level historical reference values and vary substantially with aetiology, treatment, and setting. The score guides clinical decisions such as treatment eligibility, transplant listing, and perioperative risk — always interpret in the full clinical context with a hepatologist.
Frequently asked questions
Class A (score 5–6) indicates well-compensated cirrhosis with preserved liver function. Class B (7–9) signals significant functional compromise. Class C (10–15) means decompensated cirrhosis with poor synthetic reserve, high complication risk, and the worst prognosis.
This calculator uses mg/dL for bilirubin, the conventional US unit. If your lab reports µmol/L, divide by 17.1 to convert (e.g., 34 µmol/L ÷ 17.1 ≈ 2.0 mg/dL).
Yes, though MELD (Model for End-Stage Liver Disease) has largely replaced it for transplant prioritisation due to better objectivity. Child-Pugh remains widely used for assessing surgical risk, guiding chemotherapy eligibility, and general prognostication in cirrhosis.
Also known as
TG we-Calculate Editorial Team. (2026). Child-Pugh Score Calculator — Liver Cirrhosis Severity [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/child-pugh-calculator
TG we-Calculate Editorial Team. "Child-Pugh Score Calculator — Liver Cirrhosis Severity." TG we-Calculate. 2026. https://we-calculate.com/calculator/child-pugh-calculator.
TG we-Calculate Editorial Team, "Child-Pugh Score Calculator — Liver Cirrhosis Severity," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/child-pugh-calculator
@misc{wecalculate_child_pugh_calculator, title = {Child-Pugh Score Calculator — Liver Cirrhosis Severity}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/child-pugh-calculator}}, year = {2026}, note = {TG we-Calculate} }
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