Discount CalculatorFree online financial calculator — instant results, no sign-up
Final price after a percent or fixed discount.
Estimates only, based on the inputs and assumptions shown. This is not financial, investment, tax, or legal advice. Prices, rates and local rules may change; crypto scenarios do not predict returns. Confirm important decisions with a qualified professional.
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About the Discount Calculator
The Discount Calculator determines the total money saved and the final sale price when a percentage discount is applied to an item. Shoppers, retail associates, and small business owners use it to quickly evaluate promotions, sales markdowns, and clearance deals.
- Original price
- The starting price of the product or service before any markdown, entered in dollars (typically 0 or greater).
- Discount
- The percentage reduction taken off the original price, entered as a percentage (typically between 0% and 100%).
Formula and method
You save = Original price × (Discount / 100) Final price = Original price × (1 − Discount / 100)
- Original priceThe baseline price before discounts
- DiscountThe percentage deducted from the original price
- You saveThe absolute dollar amount discounted
- Final priceThe price remaining to be paid after subtracting savings
The tool converts the discount percentage into a decimal by dividing it by 100, then multiplies this by the original price to find the savings amount. It subtracts this savings from the original price to calculate the final price, with both outputs formatted to standard currency (two decimal places).
Worked example
These are the calculator's starting values and the results it actually produces for them.
Inputs
- Original price80 $
- Discount25 %
Results
- You save$20.00
- Final price$60.00
How to use the Discount Calculator
- 1Enter the regular, non-sale price into the Original price field.
- 2Enter the percentage markdown offered into the Discount field.
- 3Multiply the original price by the discount percentage divided by 100 to determine how much you save.
- 4Subtract the savings amount from the original price to obtain the final price.
Reading your result
The 'You save' output shows the exact dollar deduction you will receive off the regular price. The 'Final price' output displays what you will pay at the register before any applicable sales tax, shipping, or extra transaction fees.
Limitations
This calculator applies a single uniform percentage discount and does not support flat-dollar deductions (such as $10 off). It does not compute sales tax, manufacturer rebates, shipping fees, or stacked/compound promotional codes.
Common questions
How do I calculate a discount in my head?+
Find 10% of the price by moving the decimal point one place to the left. For a 20% discount, double that number; for a 5% discount, halve it; and for a 25% discount, divide the original price by 4.
Does the discount apply before or after sales tax?+
In most jurisdictions, percentage discounts are applied to the retail price before sales tax is calculated, meaning you only pay tax on the discounted final price.
Can I use this for discounts greater than 100%?+
Discounts greater than 100% result in a negative final price, representing an over-reduction or store credit, though standard commercial discounts range from 0% to 100%.
Does the calculator save my information?+
Calculations run in your browser. While signed in, inputs and results are automatically recorded in account history; saving a result creates a separate saved record.
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Results are estimates for informational purposes and are not financial, medical or legal advice.