GenzeeDiscount Calculator
Work out the sale price after a percentage discount and exactly how much you save — or reverse it to find what percent off a deal really is.
Discount maths, without the mental gymnastics
Sale season turns every shop into a maths quiz: "Flat 30% off", "up to 70%", "buy 2 get 20% extra". The underlying arithmetic is simple percentage work, but doing it in your head at a busy counter invites mistakes — and retailers know that a confusing discount often feels bigger than it is. This tool answers the two questions that matter: what will I actually pay, and — given a "was/now" price pair — what percent off is that really?
How to use it
The top section takes the sticker price and the advertised percentage and shows your final price and saving, live. The bottom section is the reverse: enter the original and the sale price from a tag and get the true percentage discount — handy for checking whether "70% OFF!" survives contact with the price tag.
The formulas
discount % = (original − sale) ÷ original × 100
Worked example
A jacket is PKR 2,500 with 30% off: you save 750 and pay PKR 1,750. Next rack over, shoes marked "was 2,000, now 1,500": that is (2,000 − 1,500) ÷ 2,000 = 25% off — decent, but not the "up to 50%" the banner implied. One trap worth knowing: stacked discounts don't add. "30% + extra 20%" means 20% off the already-reduced price: 2,500 × 0.70 × 0.80 = 1,400, a 44% total discount — not 50%.
When is this useful?
Sale shopping (online or in-store), comparing offers across shops when one quotes a percent and another a rupee amount, checking a supplier's trade discount, or pricing your own products for a promotion — pair it with the profit margin calculator to be sure a discount doesn't push a product below cost. Our article on sale season math covers the common pricing tricks in detail.
Frequently asked questions
Do two discounts of 30% and 20% equal 50% off?
No — the second discount applies to the already-reduced price. 30% then 20% is 1 − (0.70 × 0.80) = 44% total. Stacked discounts always total less than their sum.
How do I add tax after a discount?
Apply the discount first, then tax on the discounted price (that's how retailers do it). Use this tool for the discount, then our sales tax calculator on the result.
Is 'up to 70% off' a real discount?
It's a ceiling, not a promise — usually only a few items hit the top figure. Use the reverse mode on each price tag to see the item's true percentage.
What's the quick mental shortcut for discounts?
Find 10% by moving the decimal point, then scale: 30% of 2,500 → 10% is 250, ×3 = 750 off. For odd rates like 35%, do 10%×3 + 5% (half of 10%).
Why does the reverse mode matter?
Because 'was' prices are sometimes inflated before a sale. Computing the true percent off from prices you can verify — or comparing against other shops — tells you whether the deal is genuine.