Discount Calculator
Calculate sale price, savings amount, original price, or discount percentage — instantly in your browser. Three modes, all pure arithmetic, nothing uploaded.
Enter the original price and discount percentage to find the final sale price and savings.
Know the sale price and discount percentage? Find what the original price was before the discount.
Enter the original and final/sale price to calculate the discount percentage.
Discount Reference Table
Savings amount and final price for common discounts and original prices (₹):
| Discount | ₹500 | ₹1,000 | ₹2,000 | ₹5,000 | ₹10,000 |
|---|---|---|---|---|---|
| 5% off | ₹475 save ₹25 | ₹950 save ₹50 | ₹1,900 save ₹100 | ₹4,750 save ₹250 | ₹9,500 save ₹500 |
| 10% off | ₹450 save ₹50 | ₹900 save ₹100 | ₹1,800 save ₹200 | ₹4,500 save ₹500 | ₹9,000 save ₹1,000 |
| 15% off | ₹425 save ₹75 | ₹850 save ₹150 | ₹1,700 save ₹300 | ₹4,250 save ₹750 | ₹8,500 save ₹1,500 |
| 20% off | ₹400 save ₹100 | ₹800 save ₹200 | ₹1,600 save ₹400 | ₹4,000 save ₹1,000 | ₹8,000 save ₹2,000 |
| 25% off | ₹375 save ₹125 | ₹750 save ₹250 | ₹1,500 save ₹500 | ₹3,750 save ₹1,250 | ₹7,500 save ₹2,500 |
| 30% off | ₹350 save ₹150 | ₹700 save ₹300 | ₹1,400 save ₹600 | ₹3,500 save ₹1,500 | ₹7,000 save ₹3,000 |
| 40% off | ₹300 save ₹200 | ₹600 save ₹400 | ₹1,200 save ₹800 | ₹3,000 save ₹2,000 | ₹6,000 save ₹4,000 |
| 50% off | ₹250 save ₹250 | ₹500 save ₹500 | ₹1,000 save ₹1,000 | ₹2,500 save ₹2,500 | ₹5,000 save ₹5,000 |
| 70% off | ₹150 save ₹350 | ₹300 save ₹700 | ₹600 save ₹1,400 | ₹1,500 save ₹3,500 | ₹3,000 save ₹7,000 |
How the Calculations Work
Sale Price (Mode 1)
Sale = Original × (1 − Discount% ÷ 100) Savings = Original × Discount% ÷ 100 Example: ₹2,000 at 20% off → Sale = ₹2,000 × 0.80 = ₹1,600; Savings = ₹400
Original Price (Mode 2)
Original = Sale ÷ (1 − Discount% ÷ 100) Example: Paid ₹1,600 with 20% off → Original = ₹1,600 ÷ 0.80 = ₹2,000
Discount % (Mode 3)
Discount% = (Original − Sale) ÷ Original × 100 Example: MRP ₹2,000, sale price ₹1,500 → Discount = (500 ÷ 2,000) × 100 = 25%
Mental shortcuts for common discounts
| Discount | Mental shortcut | Example (₹1,000) |
|---|---|---|
| 10% off | Remove one digit from the right | ₹1,000 − ₹100 = ₹900 |
| 20% off | Divide by 5 to find savings | ₹1,000 ÷ 5 = ₹200 off → ₹800 |
| 25% off | Divide by 4 to find savings | ₹1,000 ÷ 4 = ₹250 off → ₹750 |
| 33% off | Divide by 3 to find savings | ₹1,000 ÷ 3 = ₹333 off → ₹667 |
| 50% off | Halve the price | ₹1,000 ÷ 2 = ₹500 |
| 75% off | Quarter the price | ₹1,000 ÷ 4 = ₹250 |
India shopping context
During major sales like Flipkart Big Billion Days, Amazon Great Indian Festival, and Myntra End of Reason Sale, discounts of 40–80% are common. Always verify the MRP shown is the genuine pre-sale price (check if the MRP was inflated before the sale). Also note that GST applies to the final sale price, not the MRP — so a product sold at ₹800 after 20% off from MRP ₹1,000 has GST calculated on ₹800.
Frequently Asked Questions
How do I calculate a discount percentage?
Discount % = ((Original price − Sale price) ÷ Original price) × 100. For example, if an item originally costs ₹2,000 and is on sale for ₹1,500, the discount is ((2,000 − 1,500) ÷ 2,000) × 100 = 25%. Use Mode 3 above (Original → Sale price → "Find % off") to calculate this automatically.
How do I find the original price before a discount?
Original price = Sale price ÷ (1 − Discount% ÷ 100). For example, if you paid ₹750 after a 25% discount, the original price was 750 ÷ (1 − 0.25) = 750 ÷ 0.75 = ₹1,000. Use Mode 2 above (Sale price + Discount % → "Find original price") for this calculation.
Does GST apply on the discounted price or the original price in India?
In India, GST (Goods and Services Tax) is applied on the transaction value — that is, the price actually charged to the customer. If a product is sold at a discount, GST is calculated on the discounted (final) price, not the MRP. For example, an item with MRP ₹1,000 sold at 20% off (₹800) attracts GST on ₹800. Check the GST rate applicable to the specific product category, since rates vary (0%, 5%, 12%, 18%, 28%).
What is the difference between a discount and a markdown?
A discount is a reduction from the selling price given at the point of sale (e.g., 30% off during a sale). A markdown is a permanent reduction in the retail price (e.g., end-of-season repricing). From a calculation standpoint both use the same formula, but the business context differs: discounts are temporary promotions while markdowns permanently lower the listed price.
How do stacked or multiple discounts work?
Multiple discounts do NOT add up — they compound. If a product has a 20% discount and then an additional 10% loyalty discount, the final price is not 30% off. Instead: Original × (1 − 0.20) × (1 − 0.10) = Original × 0.80 × 0.90 = Original × 0.72, which is a 28% total discount, not 30%. Apply each discount in sequence for the correct result.
What is the formula for calculating the sale price?
Sale price = Original price × (1 − Discount% ÷ 100). Equivalently, Sale price = Original price − (Original price × Discount% ÷ 100). Mental shortcuts: For 10% off, remove the last digit (₹850 → ₹85 off → ₹765). For 25% off, divide by 4 then subtract. For 50% off, halve the price. For 20% off, remove the last digit and multiply by 2, then subtract.