Marginal Cost Calculator

Advanced Mode

Fixed Cost (FC) Constant component of total cost.

Linear Coefficient (v1) Linear variable cost per unit.

Quadratic Coefficient (v2) Captures increasing marginal cost (congestion).

Max Quantity (Q_max) Generates rows from Q=0 to Q_max.

Decimals

Quantity (Q)	Total Cost (TC)	Actions

Tip: Enter Q in ascending order. Marginal cost is computed as ΔTC/ΔQ between successive rows.

Q	Total Cost (TC)	Marginal Cost (MC)

MC curve is derived from your inputs. For discrete data the MC value for a row reflects the change from the previous row.

Cost Function Mode: Let total cost be TC(Q) = FC + v1·Q + v2·Q². Then marginal cost is the derivative with respect to quantity: MC(Q) = dTC/dQ = v1 + 2·v2·Q.
Discrete Data Mode: For successive observations (Q_i-1, TC_i-1) and (Q_i, TC_i) with ΔQ = Q_i - Q_i-1 > 0, compute MC_i = (TC_i - TC_i-1) / ΔQ.
Interpretation: MC approximates the incremental cost of one additional unit at quantity Q. A rising MC suggests capacity constraints or diminishing returns.

Units are arbitrary (e.g., dollars and units). Ensure consistency across inputs.