Catalytic Activity Converter
Convert between katals, enzyme units (U), microkatals, nanokatals and other units of catalytic activity.
1 katal = 1 katal
Most used catalytic activity units
Popular catalytic activity conversions
- Enzyme units to katals 1 U = 1.6666667 × 10-8 kat
- Katals to enzyme units 1 kat = 60,000,000 U
- Enzyme units to nanokatals 1 U = 16.66667 nkat
- Microkatals to enzyme units 1 µkat = 60 U
What is catalytic activity?
Catalytic activity measures how fast an enzyme or catalyst converts a substrate: the amount of substance transformed per unit of time. The SI unit is the katal (kat), one mole per second, adopted in 1999. It is very large, so labs use microkatals and nanokatals.
Medicine and biochemistry still widely use the enzyme unit (U), one micromole per minute: 1 U = 1/60 µkat ≈ 16.67 nkat. Liver enzyme tests (ALT, AST) are reported in U/L.
Catalytic activity units from smallest to largest
Every proportional catalytic activity unit on the site, ordered by size and expressed in katals.
- Milliunit 1.666667 × 10-11 kat
- Nanokatal 1 × 10-9 kat
- Enzyme unit 1.666667 × 10-8 kat
- Microkatal 0.000001 kat
- Kilounit 0.0000166667 kat
- Millikatal 0.001 kat
- Katal 1 kat
All 7 catalytic activity units
Units
Frequently asked questions
How many nanokatals is one enzyme unit?
1 U = 16.67 nkat; 1 µkat = 60 U.