Health Calculators
AST/ALT Ratio Calculator
Calculate AST/ALT ratio from enzyme levels with bidirectional updates and clinical-style interpretation guidance.
Enter AST and ALT blood test values to compute the ratio (AST divided by ALT).
You can also edit the ratio directly and the calculator will back-calculate the missing AST or ALT value.
Interpretation follows common AST/ALT ratio patterns used in liver disease screening contexts.
AST
U/
l
ALT
U/
l
Ratio
The AST/ALT ratio can be tricky — for a more detailed interpretation, check the article that came with this calculator.
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ALT:
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