Discount Calculator
Find the sale price after a discount, or work out what percentage discount was applied between two prices — instantly, with no sign-up required.
How Discount Calculation Works
Discount Amount = Original Price × Discount % ÷ 100. Final Price = Original Price − Discount Amount. For example, a ₹2,000 item with a 25% discount has a discount amount of ₹500, making the final sale price ₹1,500.
Also need to work out a tip, or check the tax on a purchase? Try our Percentage Calculator or GST Calculator.
Learn more: How to Calculate a Discount Percentage: Off, Markup, and Sale Price Explained, and How to Calculate Sales Tax and a Discount Together, and Stacking Discounts: How Multiple Percentage-Off Deals Really Add Up
Frequently Asked Questions
How is a discount amount calculated?
Discount Amount = Original Price × Discount % ÷ 100. The Final Price is then the Original Price minus that discount amount.
How do I find the original price before a discount?
Switch to “Find Discount %” mode and enter both the original price and the sale price. The calculator works out the discount amount and the exact percentage that was applied.
Can I use this for stacked or multiple discounts?
This tool calculates a single discount at a time. For stacked discounts (e.g. 20% off, then an extra 10% off), apply the first discount, take the resulting price, and run it through the calculator again with the second discount percentage.
Does this calculator include sales tax or GST?
No, this tool calculates the discount only. If you also need to add tax after discounting, try our GST Calculator or Percentage Calculator on the resulting sale price.
How do I calculate the discount percentage from two prices?
Use the “Find Discount %” tab, enter the original price and the sale price, and the calculator instantly shows the discount amount and the percentage discount applied.
What this calculator estimates
A percentage discount is calculated from the original price, not from the final sale price. Consecutive discounts must be applied one after another.
Formula and method
Savings = original price × discount rate. Sale price = original price − savings.
Worked examples
- A 20% discount on ₹2,500 saves ₹500, so the sale price is ₹2,000.
- Two consecutive discounts of 20% and 10% on ₹1,000 produce ₹720, not ₹700.
Methodology and assumptions
Each percentage is treated as a fraction of its current base. A single discount is subtracted from the original price; consecutive discounts are applied sequentially to the remaining price rather than added together.
Authoritative sources
- Guide to the SI: percent represents the number 0.01National Institute of Standards and Technology
Sources last checked September 10, 2026. Regulations and guidance can change; use the linked authority for the current position.
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Calculation, source, and limitation check completed September 10, 2026 by Ajit Naskar. No independent professional review is claimed.