About the Discount Calculator
This works out what you'll actually pay after a percentage discount, and how much you save. It's the quick check while shopping a sale, comparing offers, or pricing an item you're selling — no need to work out "25% off" in your head. Enter the original price and the discount percentage, and it shows the sale price and the saving instantly.
How it works
- Saving = original price × discount% ÷ 100
- Sale price = original price − saving
So a $80 item at 25% off saves $20 and costs $60. To reverse a known sale price back to the original, divide by (1 − discount ÷ 100) — for example a $60 price after 25% off was $60 ÷ 0.75 = $80 originally.
Assumptions and behaviour
- The discount is a single percentage off the original price.
- Results are shown to two decimal places.
- It works in any currency — the numbers are the same whatever the symbol.
- "Percent off" is taken from the original price, not from an already-reduced price.
Limitations
- It applies one discount at a time. Stacked offers (an extra 10% off an already-reduced price) aren't the same as adding the percentages — apply them in sequence: 20% then 10% off is a 28% total discount, not 30%.
- It doesn't add sales tax — the sale price is before tax; use the Sales Tax Calculator for the final checkout figure.
- It handles percentage discounts, not fixed-amount coupons or buy-one-get-one deals.
Privacy
The calculation runs entirely in your browser. Nothing is uploaded or stored.
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