Chemistry

Michaelis-Menten Calculator

Find enzyme reaction velocity.

Calculated Output

Reaction velocity (v) 66.667

Percent of Vmax (%) 66.667

Formula: v = Vmax · [S] ÷ (Km + [S])

Step-by-Step Breakdown

1. Values used:

2. Vmax = 100

3. Km = 5

4. Substrate [S] = 10

6. Reaction velocity (v) = 66.667

7. Percent of Vmax = 66.667%

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The math behind it

v = Vmax × [S] ÷ (Km + [S]). At [S] = Km, the rate is half of Vmax.

Vmax 100, Km 5, [S] 10 → v 66.7.

What is Km?

The substrate concentration giving half-maximal velocity — a measure of affinity.