Discount Calculator
Calculate final price, savings, or find the discount percentage applied.
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Final Price
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Amount Saved
About the Discount Calculator
This calculator handles three common discount scenarios: calculating the final price after applying a percentage discount, working out what percentage discount was given from two prices, and reverse-calculating the original price from a sale price and discount percentage.
Discount formula
Final price = Original price × (1 − discount% / 100). For example, a 25% discount on £120 gives £120 × 0.75 = £90.
Frequently Asked Questions
How do I calculate a discount?
Multiply the original price by the discount percentage, then subtract from the original price. For example, a 20% discount on £50 saves £10, giving a final price of £40.
How do I find what percentage discount was applied?
Divide the amount saved by the original price, then multiply by 100. For example, if an item dropped from £80 to £60, the saving is £20, and 20/80 × 100 = 25% discount.
What is the difference between discount and sale price?
The discount is the amount (or percentage) deducted from the original price. The sale price is the final amount you pay after the discount has been applied.
Can I stack discounts?
When discounts are stacked, they are usually applied sequentially, not added together. A 20% discount followed by a 10% discount is not 30% off — it is 28% off the original price.