Discount Calculator
Work out a discount in seconds. Apply a percent off to see the final price and how much you save, or enter the original and sale price to find the discount percentage.
How to use the discount calculator
- Pick a mode: apply a discount percent, or find the percent off from a sale price.
- Enter the original price, then the discount percent or the sale price.
- Read off the final price, your savings and the discount percentage.
Examples
20% off a $100 item
Price 100, discount 20%
Final price 80.00, you save 20.00
Find the discount on a sale
Price 100, sale price 75
Discount 25%, you save 25.00
Frequently asked questions
How do I calculate a discount?
Multiply the price by the discount percent divided by 100 to get the savings, then subtract that from the price. For example, 20% off $100 is $100 x 0.20 = $20 saved, leaving a final price of $80.
How do I find the discount percentage from a sale price?
Subtract the sale price from the original price, divide by the original price, then multiply by 100. A $100 item on sale for $75 is (100 - 75) / 100 x 100 = 25% off.
How do I work out the sale price after a discount?
The sale price equals the original price times one minus the discount as a decimal: price x (1 - discount/100). So $80 with 25% off becomes $80 x 0.75 = $60.
How do stacked or coupon-on-sale discounts work?
Stacked discounts apply one after another, not added together. A 20% discount followed by a 10% coupon is 0.8 x 0.9 = 0.72, so 28% off in total, not 30%. Run each step through the calculator in turn.
Does this calculator include sales tax?
No. It shows the price before tax. Tax is usually added to the discounted price at checkout, so apply your local tax rate to the final price if you need the out-the-door total.
Related tools
Percentage Calculator
Free percentage calculator. Find a percent of a number, work out what percent one number is of another, and calculate percentage change.
Profit Margin Calculator
Enter a cost and selling price to instantly see your profit, gross margin percentage and markup percentage. Free, fast and works in any currency.
Markup Calculator
Calculate markup and margin from cost and price, or find the selling price from a target markup percent. Free markup calculator with profit per unit.
A/B Test Sample Size Calculator
Work out how many visitors per variant your A/B test needs. Set baseline rate, the lift you want to detect, power and significance to size the test.
A/B Test Significance Calculator
Check if your A/B test result is statistically significant. Enter visitors and conversions for each variant to get the p-value, z-score and verdict.
Break-even Calculator
Find your break-even point fast. Enter fixed costs, price and variable cost per unit to see the units and revenue needed to cover your costs.