Discount Calculator Guide: Percentage Discounts Explained
Whether you're shopping, pricing products, or building an invoice, understanding discount math prevents errors and ensures you always know exactly what you're paying or charging.
Discount Formulas
Find discount amount & final price
Final = Price − Discount
Find original price from sale price
Find discount percentage
Double discount (successive)
Quick Reference: ₹1,000 at Various Discounts
| Discount | You Save | You Pay |
|---|---|---|
| 5% | ₹50 | ₹950 |
| 10% | ₹100 | ₹900 |
| 20% | ₹200 | ₹800 |
| 25% | ₹250 | ₹750 |
| 30% | ₹300 | ₹700 |
| 50% | ₹500 | ₹500 |
Frequently Asked Questions
How do I calculate a percentage discount?
Discount Amount = Original Price × (Discount % ÷ 100). Final Price = Original Price − Discount Amount. For example, a ₹2,000 item at 30% off: Discount = ₹600, Final price = ₹1,400.
How do I find the original price from a discounted price?
Original Price = Sale Price ÷ (1 − Discount% ÷ 100). If an item costs ₹1,400 after a 30% discount: Original = 1,400 ÷ 0.70 = ₹2,000.
What is a double discount?
A double discount applies two consecutive percentage discounts. 20% off then 10% off is NOT 30% off. First: ₹1,000 × 0.80 = ₹800. Then: ₹800 × 0.90 = ₹720. Total effective discount = 28%, not 30%.
How do I calculate discount percentage from original and sale price?
Discount % = [(Original Price − Sale Price) ÷ Original Price] × 100. For example, item originally ₹500 now ₹350: Discount % = [(500−350)÷500] × 100 = 30%.
What is the difference between discount and cashback?
A discount reduces the price upfront — you pay less immediately. Cashback returns a percentage after the purchase, sometimes after a delay or via a different account. Effective savings are the same if cashback is always received, but cashback has conditions.
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