Discount Calculator

A discount calculator works out the final price you actually pay after a percentage is taken off the original (marked) price, and shows you exactly how much money you save in the process. Whether you are staring at a "30% off" tag during the Flipkart Big Billion Days sale, comparing two festival offers on a refrigerator, or checking that the discount the shopkeeper quoted matches what the bill shows, this tool gives you the sale price and savings in a single tap.

It is built for everyday Indian shoppers, small-business owners pricing their stock, and anyone who wants to verify a deal before swiping their card. There is no jargon and no assumptions about your maths background — you type the original price in rupees and the discount percentage, and the answer appears instantly.

What it does and who it is for

The calculator answers three questions at once: what is the sale price, how much do I save, and what percentage of the original am I still paying. Shoppers use it to sanity-check sale tags; sellers use it to set discounted MRPs without eroding margins; students and freshers use it to understand the underlying percentage maths. Because it is India-first, every figure is shown in rupees with the familiar lakh and crore grouping.

How it works (the formula)

The maths behind a single discount is short. The amount you save is the discount rate applied to the original price, and the sale price is whatever is left over:

Discount Amount = Original × (Discount% ÷ 100)

Sale Price = Original − Discount Amount = Original × (1 − Discount% ÷ 100)

The second form is the quickest: a discount of 20% means you pay 80%, so you simply multiply by 0.80. A 35% discount means you pay 65%, so multiply by 0.65. The calculator does this for you and also reports the "Pay %" so you can see at a glance how much of the sticker price survives the cut.

A worked example in rupees

Suppose a winter jacket is marked ₹2,400 and the store advertises 25% off. First find the discount amount: ₹2,400 × (25 ÷ 100) = ₹2,400 × 0.25 = ₹600. Subtract it from the original: ₹2,400 − ₹600 = ₹1,800. So you pay ₹1,800 and save ₹600, which is 75% of the original price. The shortcut gives the same answer in one step: ₹2,400 × 0.75 = ₹1,800.

Here is how a few common discount rates play out on the same ₹2,400 jacket:

Handy tips

• The 10% trick: to estimate any discount quickly, find 10% (just move the decimal one place left) and scale. 10% of ₹2,400 is ₹240, so 30% is ₹720 and 5% is ₹120.
• Discount is on price, not on GST separately: on most retail bills the listed price already includes GST, so the discount you see applies to that inclusive figure. Use the GST calculator if you need to split tax out.
• Compare savings, not just percentages: 50% off a ₹500 item saves ₹250, while 20% off a ₹2,000 item saves ₹400 — the smaller-looking percentage can be the bigger rupee saving.
• Watch for "upto" offers: "upto 70% off" usually applies to a handful of items; check the actual tag and run the real number here.

Common mistakes to avoid

• Adding stacked discounts: a "20% + 10%" offer is not 30% off. The second discount applies to the already-reduced price, giving 1 − (0.80 × 0.90) = 28% off in total.
• Confusing discount with markup: going from ₹100 to ₹80 is a 20% discount, but going back from ₹80 to ₹100 is a 25% increase — percentages are not symmetric.
• Reversing wrongly: to recover the original from a sale price you must divide by (1 − discount%), not multiply by (1 + discount%). Paying ₹1,800 after 25% off means ₹1,800 ÷ 0.75 = ₹2,400, not ₹1,800 × 1.25 = ₹2,250.

This is a shopping aid, not financial advice. Always confirm the final amount on your bill before paying.