MELD Score Calculator
MELD score calculator for 2026 clinical use: computes OPTN-style MELD then MELD-Na from creatinine, bilirubin, INR, and serum sodium. Dialysis option sets creatinine per policy. For liver transplant listing and hepatology rounds; not a substitute for hospital lab systems.
Enter Values
Result
Enter values above and click Calculate to see your result.
AI Assistant
Ask about this calculator
I can help you understand the meld score calculator formula, interpret your results, and answer follow-up questions.
Try asking
Our AI assistant provides general estimates and advice only. Please consult a qualified healthcare professional before making any health-related decisions.
Formula
How it works: The Model for End-Stage Liver Disease uses logarithms of creatinine, bilirubin, and INR with standard floors. Sodium adjusts risk of hyponatremia. UNOS and OPTN update allocation rules periodically; confirm critical values against your institution.
Worked Example
Why MELD-Na matters
MELD was developed to prioritize liver transplant candidates by short-term mortality risk. Adding sodium (MELD-Na) reflects the prognostic impact of hyponatremia in cirrhosis.
- Higher scores generally reflect worse 90-day mortality without transplant
- Sodium between 125 and 137 mEq/L enters the standard adjustment term
- Institutions may use variant scores for exceptions; this tool follows the widely published OPTN-style form
- Always use the same lab units (mg/dL for creatinine and bilirubin) as your reference range
Transplant listing and exception points follow OPTN policies that change. Use this calculator for education and rough checks, not as the legal determinant of allocation.
You can also calculate changes using our Child-Pugh Score Calculator, HAS-BLED Score or CHA2DS2-VASc Score.
Frequently Asked Questions
Is this the exact UNOS calculator?
It implements the widely published MELD and MELD-Na logarithmic form and common bounds. UNOS may apply additional rules, exception scores, or rounding in their official tools. Always confirm listing decisions with your transplant center.
Why is my creatinine forced to 4.0 on dialysis?
OPTN policy historically assigns a high creatinine for patients on maintenance dialysis when computing MELD, reflecting end-stage renal dysfunction in the liver candidate population.
What if sodium is below 125 or above 137?
For this model, sodium is clamped to the 125 to 137 range before the sodium adjustment term, consistent with common published implementations.
Does MELD 3.0 apply here?
UNOS introduced MELD 3.0 with additional terms for some candidates. This tool uses the classic MELD-Na form used in many teaching scenarios. Ask your center which score they report for listing.
Can I use this for acute liver failure?
MELD is mainly validated for chronic cirrhosis and transplant listing. Acute liver failure may use different criteria (for example King College).
Should bilirubin be total or direct?
Use total bilirubin in mg/dL as specified in standard MELD documentation unless your hepatologist directs otherwise.
Can I use this MELD Score Calculator on my own web page?
You can. Look for the "Embed" button near the top of this calculator. It lets you pick a size, border style, and color palette, then gives you an iframe tag to paste into any webpage. The widget is responsive, loads fast, and costs nothing. More details at calculory.com/services/embed-calculators.
Medical Disclaimer
This calculator is provided for informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making any decisions based on these results. Do not disregard or delay seeking medical advice because of information obtained from this tool.
AI Assistant
Ask about this calculator
I can help you understand the meld score calculator formula, interpret your results, and answer follow-up questions.
Try asking
Our AI assistant provides general estimates and advice only. Please consult a qualified healthcare professional before making any health-related decisions.
Related Calculators
More Health Calculators
View allSleep Cycle Calculator
Find ideal bedtimes based on 90-minute sleep cycles.
Steps to Kilometers Calculator
Convert steps to distance, calories, and walking time.
Corrected Age Calculator
Compute corrected age from birth and due dates.
Gestational Age Calculator
Estimate gestational age from reference date.
Related Articles
All articles
Biological Age vs Chronological Age: Real Health in 2026
Biological age tracks how fast your body is aging, not just how many birthdays you have had. Learn how it is calculated in 2026 and how to lower it with measurable habits.
Read article
Gestational Age vs Due Date: What Is the Difference?
Gestational age vs due date explained in plain language. Learn how weeks pregnant, expected delivery date, LMP, ultrasound, and IVF dating fit together.
Read article
How to Calculate Corrected Age for Premature Babies
Learn how to calculate corrected age for premature babies using birth date, due date, and weeks early. Includes step-by-step examples and milestone guidance.
Read article
How to Use a Fertile Window Calculator Correctly
Learn how to use a fertile window calculator correctly with cycle length, ovulation timing, sperm survival, and the best days to conceive.
Read articleModern Tools for Every Need
Secure and Private
All calculations run locally. Your data never leaves your browser.
Verified Precision
Precise Calculations Powered by Calculory AI