Liver & pancreas

Alkaline phosphatase unit converter

Liver, bone and bile duct enzyme

Also known as: ALP, AP, ALKP, Alk phos, PAL, FA

Converter

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

µkat/L U/L

Worked example

80 U/L (middle of the reference range) = 1.33 µkat/L

Conversion formulas

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

Reference range

Unit	Adults
µkat/L	0.5 – 2.167
U/L	30 – 130

Source: Pathology Harmony Group (ACB, IBMS, RCPath): Agreed Adult Clinical Biochemistry Reference Intervals, January 2011 · Last reviewed: 2026-10-14

Note from the source: 30-130 U/L (p-nitrophenyl phosphate method with AMP buffer); higher in children and in pregnancy. UK Pathology Harmony consensus of the Association for Clinical Biochemistry, the Institute of Biomedical Science and the Royal College of Pathologists.

Frequently asked questions

How do I convert Alkaline phosphatase 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 Alkaline phosphatase?

For adults the range is 30 – 130 U/L (Pathology Harmony Group (ACB, IBMS, RCPath): Agreed Adult Clinical Biochemistry Reference Intervals, January 2011). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Alkaline phosphatase?

Common units are µkat/L, U/L.