**Marginal cost**is the cost added by producing one additional unit of a product or service. It is calculated as:

**Marginal cost**= change in total cost / change in quantity

To calculate marginal cost, simply fill in the values below and then click the “Calculate” button.

Marginal cost: **0.11**

**Explanation:**

Marginal cost = change in total cost / change in quantity

Marginal cost = 20 / 180

Marginal cost = **0.11**