Yes, completely free with no signup required. All calculations happen in your browser.

Does my data leave my device?

No. All calculations run locally in your browser — nothing is sent to a server.

Does it work on mobile?

Yes. The tool is mobile-first and works on any modern browser.

Which is usually better — a sale or a coupon?

It depends on the price. A percentage-off sale beats a fixed coupon once the item is expensive enough. For example, a 20% sale on a $100 item saves $20, beating a $15 coupon. But on a $50 item, the $15 coupon wins.

Can a coupon exceed the item price?

The tool caps "after coupon" at $0.00 — coupon values over the item price do not produce negative results in most stores.

Sale vs Coupon Comparison

Compare a percentage-off sale against a fixed-dollar coupon to instantly find the better deal. Enter any price and see which option saves you more money.

100% client-side · no upload

Original Price ($) Sale Discount (%) Coupon Value ($)

How to use

Enter the original full price of the item.
Enter the percentage-off sale discount.
Enter the fixed-dollar coupon amount to see which deal saves more.

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Frequently Asked Questions

Is this tool free?: Yes, completely free with no signup required. All calculations happen in your browser.
Does my data leave my device?: No. All calculations run locally in your browser — nothing is sent to a server.
Does it work on mobile?: Yes. The tool is mobile-first and works on any modern browser.
Which is usually better — a sale or a coupon?: It depends on the price. A percentage-off sale beats a fixed coupon once the item is expensive enough. For example, a 20% sale on a $100 item saves $20, beating a $15 coupon. But on a $50 item, the $15 coupon wins.
Can a coupon exceed the item price?: The tool caps "after coupon" at $0.00 — coupon values over the item price do not produce negative results in most stores.

Last updated: 2026-05-20 By jarvisbox