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Discount Calculator

Calculate discounts, sale prices, and savings with this simple calculator. Determine the final price after a percentage or fixed amount discount.

Discount Calculator

Please provide any 2 values below to calculate.

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Tips

  • For percentage discounts, enter a number between 0-100
  • Fixed amount discounts can't exceed the original price
  • Round your prices to two decimal places for accurate calculations

About Discount Calculator

Our Discount Calculator helps you quickly determine sale prices and savings. Whether you're shopping, planning a sale, or just curious about how much you'll save, this tool makes discount calculations easy and accurate.

Example Calculations

Retail Sale

A $100 shirt with a 25% discount would cost $75 after the discount, saving you $25.

Restaurant Coupon

If your dinner bill is $80 and you have a $15 off coupon, you'll pay $65 and save $15.

Enter an original price and a discount percentage to see the final price and the amount you save. You can also work backwards — from an original and a sale price to the percentage off. It is built for shopping in stores and online, where signs often show "30% off" but not the actual checkout price.

Because discounts are just a percentage subtracted from a base amount, the same tool covers clearance sales, coupon codes, staff discounts, bulk pricing and "spend X save Y" style offers.

Discount formulas

  • Sale price = original × (1 − discount% ÷ 100)
  • You save = original × (discount% ÷ 100)
  • Percent off = (1 − sale ÷ original) × 100
  • Original price = sale ÷ (1 − discount% ÷ 100)
  • Stacked discounts: apply each one in turn — they do not simply add up

Worked examples

$120 jacket at 25% off

Saving: 120 × 0.25 = $30. Final price: 120 − 30 = $90.

Was $80, now $52 — what percent off?

(1 − 52 ÷ 80) × 100 = (1 − 0.65) × 100 = 35% off.

Final price is $63 after 30% off — original price?

63 ÷ (1 − 0.30) = 63 ÷ 0.70 = $90.

An extra 20% off an already 40%-reduced item

Two discounts do not make 60% off. 100 × 0.60 × 0.80 = 48, so you pay $48 on a $100 item — an effective 52% off.

Adding sales tax after the discount

Discount first, then tax. A $90 sale price with 8% tax is 90 × 1.08 = $97.20 at the register.

Common uses

  • Checking the real price behind a "% off" sign before you buy
  • Comparing two offers — for example 25% off versus $20 off
  • Working out whether a coupon code is worth using
  • Pricing your own products with a target margin or markdown
  • Reverse-engineering the discount from an original and a sale price
  • Budgeting a shopping trip with several reduced items

How to use the calculator

  1. Enter the original (pre-discount) price.
  2. Enter the discount percentage shown on the offer.
  3. Read the final price and the amount saved.
  4. To find the percentage instead, enter the original price and the sale price and read the percent off.
  5. Apply multiple discounts one after another rather than adding the percentages together.

Frequently asked questions

How do I calculate a percentage discount?

Multiply the original price by the discount percentage divided by 100 to get the saving, then subtract it. $120 at 25% off: 120 × 0.25 = 30 saved, final price $90.

How do I find the original price from the sale price?

Divide the sale price by (1 minus the discount as a decimal). A $63 item after 30% off was 63 ÷ 0.70 = $90.

Can I stack two discounts by adding them?

No. 40% off then 20% off is not 60% off. Multiply the remaining fractions: 0.60 × 0.80 = 0.48, an effective 52% discount.

Should tax be added before or after the discount?

Almost always after. The discount lowers the taxable amount, then tax is applied to the reduced price.

Which is better, 25% off or $20 off?

It depends on the price. On a $60 item, 25% off saves $15, so $20 off wins. On a $100 item, 25% off saves $25 and beats $20 off. Enter both to compare.

Does the calculator store what I enter?

No. All maths runs in your browser and nothing is uploaded.

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