Discount Calculator
How to Calculate a Discount?
Our free discount calculator helps you quickly determine the final sale price of an item and exactly how much money you are saving. Whether you are shopping for Black Friday deals, calculating wholesale discounts, or just trying to figure out "how to calculate 20 percent off," this tool provides instant answers.
The Discount Formula
If you want to calculate the discount manually, the math is straightforward:
Discount Amount = (Original Price × Discount Percentage) / 100
Final Sale Price = Original Price - Discount Amount
More Than Just a Basic Tool
While commonly used as a simple percentage off calculator for retail shopping, this tool is versatile. Business owners use it as a markdown calculator to plan clearance sales. If you are shopping in a state with sales tax, remember that this is not a discount calculator with tax—you must calculate the discount first, and then apply your local tax rate to the final sale price. Whether you need a quick percent discount calculator on your phone while standing in an aisle, or are doing complex budget planning, this tool is designed for speed and accuracy.
Frequently Asked Questions
To calculate 20 percent off, simply multiply the original price by 0.20. This gives you the discount amount. Then, subtract that discount amount from the original price. For example, 20% off a $50 item is $10 ($50 × 0.20 = $10). The final price is $40 ($50 - $10).
Using our percentage off calculator is easy. Just enter the original price of the item in the first box, and the discount percentage (like 15, 25, or 50) in the second box. The calculator will instantly show you the exact amount you save and the final price you need to pay.
To use a discount calculator with tax, you must apply the discount to the original price first. Once you have the discounted sale price, you then apply the sales tax percentage to that new, lower amount. For example, if a $100 item is 20% off, the sale price is $80. If your local sales tax is 8%, you calculate 8% of $80 ($6.40), making the final total $86.40.
A double discount occurs when a store offers an additional percentage off an already discounted item (e.g., "Take an extra 10% off clearance items already marked down 30%"). You do not add the percentages together (it is not 40% off). Instead, you apply the 30% discount first, and then apply the 10% discount to the new, lower price.