Discount Calculator Formula

A discount calculator formula helps you find how much money is saved from a discount and what the final price will be after the discount is applied.

Discount Amount Formula

To calculate the amount of money saved:

Discount Amount = Original Price × Discount Rate / 100

Final Price Formula

To find the price after applying the discount:

Final Price = Original Price − Discount Amount

You can also calculate the final price directly with:

Final Price = Original Price × (1 − Discount Rate / 100)

Example

Suppose an item costs $80 and has a 25% discount.

Discount Amount = 80 × 25 / 100 = $20

Then subtract the discount from the original price:

Final Price = 80 − 20 = $60

So, the discount saves $20, and the final price is $60.

How to Calculate the Discount Percentage

If you know the original price and the amount saved, you can find the discount percentage using:

Discount Rate = (Discount Amount / Original Price) × 100

For example, if a $100 item is reduced by $15:

Discount Rate = (15 / 100) × 100 = 15%