Enter the cost change ($) and the quantity change (units) into the Calculator. The calculator will evaluate the Marginal Change. 

Marginal Change Formula

MC = CC / CQ


  • MC is the Marginal Change ($/units)
  • CC is the cost change ($)
  • CQ is the quantity change (units)

To calculate Marginal Change, divide the cost change by the quantity change.

How to Calculate Marginal Change?

The following steps outline how to calculate the Marginal Change.

  1. First, determine the cost change ($). 
  2. Next, determine the quantity change (units). 
  3. Next, gather the formula from above = MC = CC / CQ.
  4. Finally, calculate the Marginal Change.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

cost change ($) = 300

quantity change (units) = 200