Discount calculator

Use “Take X% off” to see the sale price. The other rows show savings as a percent and the change between two prices.

What is % of ?

is what % of ?

From to is

Add % to =

Take % off =

How to calculate a discount

In “Take X% off”, enter the discount (for example 20) and the original price.
The sale price appears instantly: 20% off 100 is 80.
To find the discount you got, enter the old and new price in the “From … to …” row.

Formula: sale price = price × (1 − discount ÷ 100). Stacked discounts multiply: 20% then 10% off is 28% off in total, not 30%.

How do I work out two discounts in a row?

Apply them one after the other: 20% off 100 is 80, then 10% off 80 is 72. That's 28% off in total.