What Is a Percentage Discount Calculator?
A percentage discount calculator works out how much you'll pay for an item after a percent-off sale, and how much money you save. Whether you're shopping a "25% off" rack, comparing coupon codes, or pricing your own products, this tool turns a percentage into real dollars instantly.
How to Use It
Enter the original price of the item and the discount percentage. The calculator returns the sale price (what you pay) and the amount saved. A 0% discount returns the full price; a 100% discount makes the item free.
The Formula Explained
The math is simple. A discount of d percent means you pay the remaining fraction of the price:
$$\text{Sale Price} = \text{Price} \times \left(1 - \frac{\text{Discount}}{100}\right)$$
The savings are just the difference between what you would have paid and what you actually pay:
$$\text{Saved} = \text{Price} - \text{Sale Price}$$
Worked Example
Suppose a jacket costs $100 and is marked 25% off. Plugging in: $$\text{Sale Price} = 100 \times \left(1 - \frac{25}{100}\right) = 100 \times 0.75 = 75$$ You save \(100 - 75 = 25\). So you pay $75 and keep $25 in your pocket.
FAQ
How do I calculate the original price from a sale price? Divide the sale price by \(\left(1 - \frac{\text{Discount}}{100}\right)\). For example, $75 at 25% off came from \(75 \div 0.75 = 100\).
Does this include tax? No. The result is the pre-tax discounted price. Add any sales tax separately on top of the sale price.
Can I stack two discounts? Stacked discounts multiply, they don't add. A 20% then 10% discount equals \(0.8 \times 0.9 = 0.72\), i.e. 28% off — not 30%.
