Discount calculator
Find the sale price and your savings after a discount, stack a second discount, or work out the percentage off from two prices.
Sale price
How it works
sale price = price × (1 − discount ÷ 100)discount % = (price − sale) ÷ price × 100A second discount is taken from the already reduced price.
Worked example
A $80 jacket, 25% off, then 10% off at the till:
- 80 × 0.75 = 60
- 60 × 0.90 = 54
- You pay $54 and save $26 (32.5%)
Frequently asked questions
How do I calculate a discount?
Multiply the price by the discount percentage and divide by 100 to get the savings, then subtract them from the price. 25% off 80 is 80 × 0.25 = 20 off, so 60.
How do two discounts add up?
They multiply, they do not add. 20% off and then another 10% off is 0.8 × 0.9 = 0.72, a total discount of 28%, not 30%.
How do I find the discount percentage from two prices?
Divide the difference by the original price: (80 − 60) ÷ 80 × 100 = 25%.