Calculate discounted prices, percentage savings, and final costs instantly with our free Discount Calculator. Perfect for shopping, sales, promotions, and budgeting. Fast, accurate, and easy to use on desktop and mobile devices.
✔ Sale price calculator • ✔ Percentage discounts • ✔ Instant savings • ✔ Free online calculator
The Discount Calculator helps you quickly calculate how much money you save during sales, promotions, and special offers. Simply enter the original price and discount percentage to instantly see the amount saved and the final price after the discount has been applied.
Whether you are shopping online, comparing offers in a store, or checking Black Friday deals, this calculator removes the need for manual calculations and helps you make informed buying decisions.
A discount reduces the original price of a product or service by a certain percentage. The larger the percentage discount, the greater your saving.
For example, a 20% discount on a £100 item means you save £20 and pay only £80.
Retailers frequently use discounts during seasonal sales, clearance events, loyalty promotions, and special occasions such as Black Friday, Cyber Monday, Christmas sales, and end-of-season stock reductions.
The calculator uses the standard discount formula:
Discount Amount = Original Price × Discount Percentage ÷ 100
Final Price = Original Price − Discount Amount
Example:
Discount calculations are useful in many everyday situations:
| Discount | Saving on £100 | Final Price |
|---|---|---|
| 5% | £5 | £95 |
| 10% | £10 | £90 |
| 15% | £15 | £85 |
| 20% | £20 | £80 |
| 25% | £25 | £75 |
| 30% | £30 | £70 |
| 50% | £50 | £50 |
Many people assume that two 25% discounts equal a 50% discount. This is incorrect.
Discounts are usually applied one after another.
Example:
The total saving is £43.75, not £50.
| Original Price | 10% Off | 20% Off | 30% Off | 50% Off |
|---|---|---|---|---|
| £50 | £45 | £40 | £35 | £25 |
| £100 | £90 | £80 | £70 | £50 |
| £250 | £225 | £200 | £175 | £125 |
| £500 | £450 | £400 | £350 | £250 |
How do I calculate a discount manually?
Multiply the original price by the discount percentage and divide by 100. Subtract the result from the original price.
What is 20% off £100?
A 20% discount on £100 equals £20, resulting in a final price of £80.
What is the easiest way to compare sales?
Calculate the final price after all discounts rather than comparing percentages alone.
Can this calculator be used for business discounts?
Yes. The calculator works for both personal and business-related discount calculations.
Does the calculator include VAT?
No. VAT calculations should be handled separately if required.
Quickly calculate percentages and changes.
Perform addition, subtraction, multiplication and division.
Work out sale prices and savings during promotions.
Calculate gratuities and split restaurant bills.
Simplify and scale ratios for recipes, maths and business.
Calculate mean, median and mode instantly.
Find the number of days, months or years between two dates.
Count business days while excluding weekends and holidays.
See exactly how much time remains until any future date or event
Measure elapsed time accurately with an easy-to-use online stopwatch
Quickly access our most popular calculators. Fast, accurate, and free — no signup required.
Browse essential calculators for finance, everyday maths, and scientific calculations — all in one place.
✔ Free • ✔ Fast • ✔ No signup required • ✔ No DATA collected
Built for personal use, now shared for free — simple, fast, and private calculators for everyone.
Last Updated: August 2026