Discount Calculator
Find the sale price and savings after any discount.
Quick answer
A discounted price is the original minus the markdown: sale price = original × (1 − discount%). A 25% discount means you pay 75%. To stack a coupon on a sale, apply each percentage in turn — don't just add the percentages together.
Sale price
$90.00
You save
$30.00
Effective discount
25.0%
Stacked discounts multiply
25% off then an extra 20% off is not 45% — the second discount applies to the already-reduced price: 0.75 × 0.80 = 0.60, a 40% effective discount. Retailers know the difference reads bigger than it is.
Percent off vs. dollars off
A $20 coupon beats 20% off below $100 and loses above it — the crossover is coupon ÷ rate. When both are offered, order matters too: applying the dollar coupon first usually yields the lower final price.
Frequently asked questions
- How does the Discount Calculator work?
- A discounted price is the original minus the markdown: sale price = original × (1 − discount%). A 25% discount means you pay 75%. To stack a coupon on a sale, apply each percentage in turn — don't just add the percentages together.
- Is the Discount Calculator free to use?
- Yes. The Discount Calculator is completely free, runs entirely in your browser, and requires no account or sign-up. Your inputs never leave your device.
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