Discount Calculator
Sale price, discount percentage, or the original price.
Runs entirely in your browser — nothing you enter is uploaded or sent to a server.
Prices here are plain arithmetic — no tax, shipping, card fees or minimum-spend conditions are included, and offers usually have conditions the maths can't see. Check the final figure at checkout before you rely on it. Read our full disclaimer.
About this tool
Three related sums that people reach for a calculator to do, in one place. Give it a price and a percentage and it tells you what you pay. Give it two prices and it tells you what discount that was. Or give it what you paid and the percentage, and it works backwards to the original ticket price — which is the one that trips people up, because it is a division rather than an addition. There is also a panel for stacked offers, the "30% off, then a further 20% at checkout" kind, because those never add up the way they sound: the second discount comes off what is left after the first, so the pair is worth 44% rather than 50%.
Example
₹2,000 with 25% off means you save ₹500 and pay ₹1,500. Add a further 20% at checkout and you pay ₹1,200 — a 40% discount overall, not 45%.
How to use
- 1Pick what you want to work out: the sale price, the discount percentage, or the original price.
- 2Fill in the two figures you know.
- 3For a stacked offer, add the second percentage in the box below.
Features
- Three modes: sale price, discount percentage, and original price.
- Works backwards correctly — the original price is a division, not the percentage added back.
- Stacked discounts, with the true combined percentage.
- Currency-agnostic; nothing is sent anywhere.
Frequently asked questions
How do I find the original price from a sale price?
Divide, don't add. If you paid ₹1,500 after 25% off, the original was 1,500 ÷ 0.75 = ₹2,000. Adding 25% to ₹1,500 gives ₹1,875, which is the wrong answer and a very common mistake — the percentage was taken off the larger number, so it has to be taken off the larger number to reverse it.
Why isn't 30% off plus 20% off the same as 50% off?
Because the second discount applies to what is left, not to the original. Take 30% off ₹1,000 and you have ₹700; take 20% off that and you have ₹560. That's 44% off in total. Stacked offers are always worth less than the percentages suggest, which is part of why they're advertised that way.
How do I work out the percentage from two prices?
Divide the saving by the original price. ₹500 off ₹2,000 is 500 ÷ 2,000 = 25%. Switch to the 'Discount %' mode and enter both prices and it does exactly that.
Does this include tax?
No. It works purely on the numbers you give it, so if your prices already include tax the answers do too, and if they don't, they don't. Adding a tax step would require knowing your rate and whether the discount applies before or after it, which varies.
What about 'buy one get one free' or minimum-spend offers?
Those aren't percentage discounts, so this won't model them directly. BOGOF on two identical items is effectively 50% off the pair, which you can enter as such. Conditional offers with a minimum spend need you to check the condition first — the arithmetic can't see it.
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