Wraplet guide
How to Calculate Discounts and Sale Prices
Learn how to calculate percent-off savings, final sale price, and quick discount examples.
Discount formula
Savings = original price x discount percent / 100.
Final price = original price - savings. For example, 20% off 100 gives savings of 20 and a final price of 80.
Common uses
Discount calculations are useful for shopping, invoices, promotions, markups, and quick comparisons between sale offers.
Taxes, fees, shipping, and currency conversion may change the real checkout total.
Frequently asked questions
How do I calculate 20% off?
Multiply the original price by 20 and divide by 100, then subtract that savings from the original price.
Does a discount calculator include tax?
No. Unless a tool specifically includes tax, it usually calculates the discount before taxes, shipping, or fees.