Liver & pancreas

ALT unit converter

Liver enzyme (alanine aminotransferase)

Also known as: GPT, SGPT, ALAT, TGP, Alanine aminotransferase, Alanine transaminase

Converter

Enter a value in any unit and all other units fill in.

µkat/L U/L

Worked example

20 U/L (middle of the reference range) = 0.333 µkat/L

Conversion formulas

µkat/L	µkat/L = U/L × 0.01667	U/L = µkat/L × 60

Reference range

Unit	Adults
µkat/L	0.0667 – 0.6
U/L	4 – 36

Source: MedlinePlus (NLM): Alanine transaminase (ALT) blood test · Last reviewed: 2026-10-14

Note from the source: 4-36 U/L (0.07-0.60 µkat/L); laboratory methods differ (MedlinePlus)

Frequently asked questions

How do I convert ALT from U/L to µkat/L?

µkat/L = U/L × 0.01667. In the other direction: U/L = µkat/L × 60.

What is the reference range of ALT?

For adults the range is 4 – 36 U/L (MedlinePlus (NLM): Alanine transaminase (ALT) blood test). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for ALT?

Common units are µkat/L, U/L.