Michaelis–Menten Enzyme Kinetics Calculator
Reaction velocity from Vmax, Km and substrate concentration; catalytic efficiency.
How to use the Michaelis–Menten Enzyme Kinetics Calculator
- Enter or select: Vmax, Km, Substrate [S].
- Fill in what you know of: Enzyme concentration [E] — leave the unknown empty.
- The results (Velocity v, Fraction of Vmax, kcat = Vmax/[E], kcat/Km) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- v = Vmax·[S] / (Km + [S])