Finance

Discount calculator

Calculate sale price from a percentage off, find what discount % was applied, or work out original price.

Original price + discount % → sale price

minus % = sale price —

Original + final price → what % off?

→ = — % off

Sale price + % off → original price

at % off → original —

100% private. All processing happens locally in your browser — no files or data are ever sent to a server.

How to use Discount calculator

01 Fill in the required values using the fields provided
02 Results calculate automatically as you type
03 Copy or note the result — all calculations stay on your device

Frequently asked questions

Common questions about Discount calculator.

Is Discount calculator free to use?

Yes, Discount calculator is completely free. No account, subscription, or payment is ever required — just open the page and start using it.

Does Discount calculator upload my data to a server?

No. Discount calculator runs entirely in your web browser using client-side JavaScript. Your files, text, and data never leave your device, making it 100% private.

Can I use Discount calculator on my phone or tablet?

Yes. Discount calculator is fully responsive and works on all modern smartphones, tablets, and desktop browsers without installing any app.

Are these results accurate enough to rely on?

Discount calculator uses well-established formulas and provides accurate estimates for everyday use. For financial, medical, or legal decisions, always consult a qualified professional.

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About Discount calculator

The Discount Calculator solves all three directions of a sale price problem: given an original price and a discount percentage it shows the final price and saving; given an original and final price it works out the discount percentage applied; and given a final price and percentage it recovers the original price. Retail promotions, coupon codes, seasonal sales, and wholesale pricing all involve percentage-off calculations. Having the reverse calculation available — working out what percentage off was applied, or recovering the original price — is particularly useful for resellers, accountants, and comparison shoppers.