What Is a Sale Price Calculator?
A sale price calculator works out the final price you pay for an item after a percentage discount is applied. Retailers advertise savings as "30% off" or "half price" — this tool converts that percentage into the exact dollar amount you'll pay and the amount you save, so you can compare deals instantly.
How to Use It
Enter the original price (the price before any discount) and the discount percentage being offered. The calculator returns the sale price and your total savings. It works for any currency since the math is purely percentage-based.
The Formula Explained
The core equation is:
$$\text{Sale Price} = \text{Original Price} \times \left(1 - \frac{\text{Discount \%}}{100}\right)$$
The discount percent is converted to a decimal fraction by dividing by 100. Subtracting that fraction from 1 gives the proportion of the price you still pay. Multiplying by the original price gives the final amount. The savings are simply the original price minus the sale price.
Worked Example
Suppose a jacket costs $80 and is on sale at 25% off. The sale price is $$80 \times \left(1 - \frac{25}{100}\right) = 80 \times 0.75 = \$60$$ You save \(80 - 60 = \$20\).
FAQ
Can I stack two discounts? No — apply them in sequence. Take 20% off first, then apply the second discount to that reduced price, not by adding the percentages together.
Does this include sales tax? No. The result is the pre-tax discounted price. Add any applicable tax to the sale price afterward.
What discount gives half price? A 50% discount halves the price, so a $100 item becomes $50.
