Discount and sale price calculator

Work out a sale price from a percentage, the percentage from a sale price, what two discounts in a row really come to, and what “buy 2, get 1 free” is worth. Add your cost to see what the discount does to your profit, and how many more sales you’d need to make up for it.

The discount

Kind of offer

Result

Customer pays

Discount

Profit

BeforeOn sale

Runs in your browser. Nothing you enter is sent anywhere.

How it works

  1. Choose the kind of offer and enter the normal price and the discount, or the sale price.
  2. The sale price and the real percentage off are worked out; two discounts are applied one after the other, as shops do.
  3. With your cost per item, you see profit and margin before and during the sale, and how many more sales give the same total profit.

What you enter stays on your device

This tool runs entirely in your browser. Nothing you type is sent to our servers, so there is nothing for us to store, see or delete.

To check, open your browser’s developer tools, switch to the Network tab and use the tool: you will not see what you type being sent anywhere.

Questions

Is 20% off then 10% off the same as 30% off?

No: it’s 28%. The second discount is taken off the already-reduced price, so 100 becomes 80, then 72.

How many more sales does a discount need?

More than most people expect. If an item costs 18 and sells for 40, a 25% discount cuts profit per sale from 22 to 12, so you need about 83% more sales to earn the same.

Is what I enter saved or sent anywhere?

No. Everything runs in your browser and nothing you type is sent to our servers.