Discount Calculator
Enter the original price and discount percentage to instantly see the sale price, how much you save, and the total with tax.
Price & discount
Sale price
Updates instantly as you type.
Reviews
Everything you need to know about Discount Calculator
How the sale price is calculated, how tax factors in, and how to handle stacked discounts.
- Enter a price and discount percentage and see the sale price instantly.
- Everything runs locally in your browser — your numbers are never uploaded.
- Add a tax rate to see the final total, or leave it blank to see the sale price alone.
How to use Discount Calculator
- Type the item's price before any discount.
- Type the percentage being taken off, like 20 for 20% off.
- The sale price and amount saved appear instantly, with an optional tax rate applied to the final total.
Why calculate a discount
Percentage math is easy to get wrong under pressure — at checkout, comparing two sales, or figuring out if a "30% off" deal actually beats a flat dollar amount off elsewhere.
This calculator does the math for you instantly in your browser: enter the original price and the percentage off, and it shows the sale price, the amount saved, and the total with tax if you need it.
Common discount scenarios
| Scenario | Best for | Why it's worth checking |
|---|---|---|
| Single sale percentage Most common | Everyday shopping | Confirms the actual dollar amount you're saving, not just the percentage. |
| Discount plus tax | Retail purchases with sales tax | Shows your real out-the-door total, not just the pre-tax sale price. |
| Stacked discounts | Coupon + clearance combos | Stacked percentages compound rather than add — worth checking the real total. |
Discount Calculator without uploading anything
The prices and percentages you type are read directly by JavaScript running in your browser, calculated on the spot, and shown back to you — no price, purchase, or other detail is ever transmitted to a server.
Because there's no upload involved, there's no limit on how many prices you can check.
Your numbers never leave your device. The calculation is pure client-side JavaScript, with nothing logged or stored.
Shopping in a different currency? The Currency Converter tool can help convert the sale price too.
Percentage off vs. dollar amount off — which is the better deal?
| Deal type | Best for comparing | Watch out for |
|---|---|---|
| Percentage off Use this tool | Comparing deals across different priced items | A bigger percentage isn't always a bigger dollar saving — check the actual amount. |
| Flat dollar amount off | Lower-priced items | A flat $10 off can beat 20% off on a cheap item, but lose to it on an expensive one. |
When two deals use different formats, convert both to a final dollar price using this calculator — that's the only fair way to compare them.
What people use Discount Calculator for
- ShoppingChecking the real sale price before you buy, online or in-store.
- Comparing dealsFiguring out which of two sales actually saves more money.
- BudgetingPlanning purchases around a known discount and tax rate.
- Retail & small businessQuickly working out sale pricing for a promotion.
- Coupon stackingWorking through the math on combined discounts step by step.
How This Tool Works
The calculation runs live in your browser via JavaScript using standard percentage math — nothing is uploaded, stored, or logged.
Last updated: September 14, 2026.
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