AST Unit Converter — µkat/L to IU/L Calculator
Instantly convert Aspartate Aminotransferase (AST) liver enzyme blood test results between microkatal per litre (µkat/L or ukat/L) and International Units per litre (IU/L).
µkat/L to IU/L or IU/L to µkat/L?
Select your preferred conversion direction. Enter your blood test value to instantly see the matched conversion and understand how it relates to standard reference ranges.
µkat/L to IU/L Converter
Convert AST from SI units (µkat/L) to traditional units (IU/L)
Enter the value from your blood test report
Conversion Result
Converted AST value and reference context
Enter your AST value in µkat/L, then click Convert to IU/L.
IU/L to µkat/L Converter
Convert AST from traditional units (IU/L) to SI units (µkat/L)
Enter the value from your blood test report
Conversion Result
Converted AST value and reference context
Enter your AST value in IU/L, then click Convert to µkat/L.
Typical AST Reference Ranges
Standard reference intervals for Aspartate Aminotransferase (AST) in adults. Note: Reference ranges can vary slightly depending on the specific laboratory and testing methodology used. Always consult your doctor for interpretation.
| Demographic | Traditional (IU/L) | SI Unit (µkat/L) | Notes |
|---|---|---|---|
| Adult Males | 8 – 48 IU/L | 0.13 – 0.80 µkat/L | Slightly higher baseline due to muscle mass |
| Adult Females | 8 – 40 IU/L | 0.13 – 0.67 µkat/L | Standard reference interval |
| Children | 10 – 40 IU/L | 0.17 – 0.67 µkat/L | May be slightly higher in growing children |
| Conversion Factor | 1 IU/L | 0.0167 µkat/L | Multiply IU/L by 0.0167 (or divide by 60) |
| Conversion Factor | 60 IU/L | 1 µkat/L | Multiply µkat/L by 60 |
AST Unit Converter FAQ
Everything patients and medical professionals ask about liver enzyme units and blood test conversions.
To convert Aspartate Aminotransferase (AST) from microkatal per litre (µkat/L or ukat/L) to International Units per litre (IU/L), multiply the value by 60. For example, 0.5 µkat/L is equal to 30 IU/L.
To convert AST from International Units per litre (IU/L) to microkatal per litre (µkat/L), divide the value by 60. For example, 60 IU/L is equal to 1.0 µkat/L.
Normal AST reference ranges vary slightly by laboratory, but generally, they are approximately 8 to 48 IU/L (0.13 to 0.80 µkat/L) for adult males, and 8 to 40 IU/L (0.13 to 0.67 µkat/L) for adult females.
Elevated AST levels can indicate liver damage or disease, such as hepatitis, cirrhosis, or fatty liver disease. However, AST is also found in the heart, muscles, and kidneys, so high levels can sometimes reflect damage to these tissues as well.
Both are units of enzyme activity. IU/L (International Units per litre) is the traditional unit still widely used in the US and many other countries. µkat/L (microkatal per litre) is the SI (International System) unit, where 1 katal equals the amount of enzyme that converts 1 mole of substrate per second. 1 µkat/L equals exactly 60 IU/L.