How to use the Discount Calculator
Enter the original price and a discount to see the sale price. Add an extra discount to see why "20% + 10% off" is actually 28% off, not 30%.
Formula
Final price = Price × (1 − d1/100) × (1 − d2/100). Effective discount = 1 − Final ÷ Price.
Shop owners can use this to check festival offers before printing them, and to make sure combined offers still leave a margin — pair it with the profit margin calculator.
Frequently asked questions
Is 20% + 10% the same as 30% off?
No. The second discount applies to the already-reduced price, so 20% + 10% is a 28% total discount.
How do I calculate the original price from a sale price?
Divide the sale price by (1 − discount/100). For example, ₹800 after 20% off was originally ₹1,000.