Enter the total number of stamps purchased and the total cost of the stamps into the calculator to determine the cost per stamp.

Cost Per Stamp Formula

The following equation is used to calculate the Cost Per Stamp.

CPS = CS / #S

  • Where CPS is the cost per stamp ($/stamp)
  • CS is the cost of the lot of stamps ($)
  • #S is the number of stamps received

To calculate the cost per stamp, simply divide the cost of the stamps by the number of stamps received.

What is the Average Cost Per Stamp?

The average cost of a first-class stamp is 55 cents. The average cost of a postcard stamp is 35 cents.

How to Calculate Cost Per Stamp?

Example:

First, determine the total cost of the lot of stamps. In this example, the total cost is $50.00.

Next, determine the number of stamps received. For this problem, the number of stamps is 400.

Finally, calculate the cost per stamp using the formula above:

CPS = CS / #S

CPS = 50 / 400

CPS = $.125/stamp