Liver & pancreas

Ammonia unit converter

Nitrogen waste product (liver function marker)

Also known as: NH3, Ammonium, NH4+, Blood ammonia, Ammoniémie, Amoníaco

Converter

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

µmol/L µg/dL mg/L µg/L

Worked example

21.35 µmol/L (middle of the reference range) = 36.4 µg/dL

Conversion formulas

µg/dL	µg/dL = µmol/L × 1.704	µmol/L = µg/dL × 0.587
mg/L	mg/L = µmol/L × 0.01703	µmol/L = mg/L × 58.72
µg/L	µg/L = µmol/L × 17.03	µmol/L = µg/L × 0.05872

Reference range

Unit	Adults
µmol/L	10.7 – 32
µg/dL	18.23 – 54.51
mg/L	0.1822 – 0.545
µg/L	182.2 – 545

Source: MedlinePlus (NLM): Ammonia blood test · Last reviewed: 2026-10-14

Note from the source: 15-45 µg/dL (10.7-32 µmol/L); specimen must be cooled and analysed promptly (MedlinePlus)

Frequently asked questions

How do I convert Ammonia from µmol/L to µg/dL?

µg/dL = µmol/L × 1.704. In the other direction: µmol/L = µg/dL × 0.587.

What is the reference range of Ammonia?

For adults the range is 10.7 – 32 µmol/L (MedlinePlus (NLM): Ammonia 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 Ammonia?

Common units are µmol/L, µg/dL, mg/L, µg/L.