Marginal Cost Calculator

Marginal Cost Calculator estimates added cost per unit from changes in total cost and quantity, showing equations, examples, and results.

Enter Values

Total Cost (before) All costs at the initial production level.

Total Cost (after) All costs at the higher production level.

Quantity (before) Units produced before output increases.

Quantity (after) Units produced after output increases.

Equation Preview

ΔTC = TC_after − TC_before = —

ΔQ = Q_after − Q_before = —

MC = ΔTC ÷ ΔQ = —

Helping notes

Enter total cost and quantity at two output levels. The calculator finds the change in cost and change in quantity, then divides to estimate added cost per unit.

Results

Marginal Cost (per unit)

$7.00

Change in Total Cost (ΔTC)

$350.00

Change in Quantity (ΔQ)

Interpretation

It costs about $7.00 to produce each additional unit over this range.