TetraKits
Enter the original price and discount percentage to see exactly how much you save and the final sale price. Perfect for comparing store sales, coupon codes, and markdown pricing before checkout. The TetraKits Discount Calculator runs entirely in your browser — free, private, and ready on mobile or desktop.
Overview
Black Friday tags, coupon codes, and clearance stickers advertise percent-off deals that are hard to mental-math at the rack. Enter original price and discount rate to see exact savings and final price before you buy.
How to use the discount calculator
- Enter original price — Type the full price before any discount. Example: $89.99 list price.
- Enter discount percent — Type the percent off — 20 for a 20% sale, or 15 for a 15% coupon.
- Read savings and final price — See discount amount and sale price. For tax on the discounted total, try the sales tax calculator.
Common use cases
- Enter original price: Type the full price before any discount.
- Enter discount percent: Type the percent off — 20 for a 20% sale, or 15 for a 15% coupon.
- Read savings and final price: See discount amount and sale price.
- Bookmark for quick access: Save the tool for repeat tasks without installing an app.
Frequently asked questions
How is the sale price calculated?
Sale price = original × (1 − discount/100). A $100 item at 25% off → $25 saved, $75 final price.
Can I calculate stacked discounts?
This tool applies one discount percentage. For two sequential discounts (20% then 10%), calculate the first, then use the sale price as the new original.
What if the discount is a fixed dollar amount?
Divide the dollar discount by original price and multiply by 100 to get the equivalent percent, then enter that rate.
Does this include tax?
No. The result is pre-tax. Add sales tax separately with a tax calculator if needed.
Is this discount calculator free?
Yes. Unlimited calculations with no signup; prices stay in your browser.
