Enter the current sale price and the percent off of the original price to calculate the original price of a good. This calculate can also determine the sale price or percentage off given the original price and other variable.

Original Price Formula

The following equation is used to calculate the original price of a good on discount.

OP = SP / (1-PO/100)
  • Where OP is the original price ($)
  • SP is the current sale price ($)
  • PO is the total percent off

To calculate the original price of an item, divide the sale price by the value of 1 minus the value of the percentage off divided by 100.

Original Price Definition

An original price is defined as the original price an object is sold at before a discount is applied.

Original Price Example

The following is an example of how to calculate the original price of a discounted item.

  1. First, determine the sale price. This is usually the price found on the sticker. For this example, we will say 50$ is the sale price.
  2. Next, determine the percent off. For this example, we will assume a discounted rate of 25%.
  3. Finally, enter these values into the formula above. This yields an original price of 66.67$.


What is a percent off?

A percent off, also known as a discount, is a reduction in the price of an item that makes the good “on-sale”.

What is a normal percent off?

Anything above 25% off is considered a great deal. Be wary of businesses increasing their price, then claiming a large discount that only gets it back to the original price before it was increased.