HomeCalculators › Discount Calculator
🏷️

Discount Calculator

Find the sale price, how much you save, and what a stacked or double discount really comes to.

Result

Find the sale price, how much you save, and what a stacked or double discount really comes to. Everything is worked out in your browser, so your figures never leave your device.

How to use the Discount Calculator

  1. Enter your figures in the fields above.
  2. The result updates instantly as you type — there is no button to press and nothing to wait for.
  3. Adjust any value to compare scenarios side by side.

Why use this calculator

Frequently Asked Questions

Is 20% off plus an extra 10% off the same as 30% off?

No, and this is the most common mistake with sale pricing. The second discount applies to the already-reduced price, so 20% then 10% works out to 28% off, not 30%. Enter both and the calculator shows the true effective discount.

How do I work out the discount percentage from two prices?

Subtract the sale price from the original price, divide by the original price, then multiply by 100. Entering the original price and adjusting the discount until the final price matches gives you the same answer.

Can I add sales tax or GST?

Yes. Tax is applied after the discount, which is how most shops calculate it. Leave the tax field at 0 if your price already includes tax.

Does the tool store what I enter?

No. Everything is calculated in your browser and nothing is sent to a server.

Related calculators