OOnDevice

Discount Calculator

Calculate discount savings, final price, and optionally add tax. Supports percentage and fixed amount discounts.

Works offlineNothing uploaded
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Enter an original price and discount to see your savings

How to use it

1

Enter original price

Type the original price of the item.

2

Enter discount percentage

Input the discount percentage to apply.

3

View savings and final price

See how much you save and the discounted price.

When to use Discount Calculator

You're standing in a boutique looking at a jacket tagged $189 with a "30% off" sticker and wondering if it beats the $129 flat-price version at the store next door. Enter $189 and 30% — the discounted price appears instantly so you can compare. The calculator works in both directions: percentage off (30% off $189) or fixed amount off ($15 off $79), and you can add your local sales tax rate so the total reflects what actually hits your credit card. Useful for Black Friday comparisons, setting sale prices as a small business owner, or verifying that a "buy more save more" offer is actually the better deal. The arithmetic runs on your device — no inputs reach a server.

  • Compare 30% off vs a flat $15 discount on the same item
  • Set a sale price for a boutique item including local tax
  • Verify a Black Friday deal beats the competitor's list price

About this tool

Spot a 30% off tag and want to know what you're actually paying? Enter the original price and the discount — as a percentage or a fixed dollar amount — and see the final price and total savings instantly. Add a local tax rate to include it in the total. Handy at the checkout line, when setting sale prices for a small business, or when comparing "20% off" versus "$15 off" on the same item. Your numbers never touch a server — all the arithmetic runs locally in your browser.

Frequently asked

Is this discount calculator private? Can I use it offline?
Yes on both counts. The price and percentage you enter are multiplied locally — no figures are transmitted anywhere, and the calculator keeps working even when your Wi-Fi drops.
Can I calculate by discount amount instead of percentage?
Yes. Switch between percentage mode and fixed amount mode using the toggle. Both show you the final price and total savings.
How is tax calculated?
Tax is applied to the discounted price (after the discount is subtracted). Enter your local tax rate to see the final price with tax included.
Does this handle multiple discounts?
This calculator handles a single discount. For stacked discounts, apply each one separately using the final price from the previous calculation.