Wyvek

Discount Calculator

Work out sale prices and savings.

Discount by percentage

You save —
Final price —

Find the discount percent

Discount —
You save —

The currency symbol is illustrative — the math works for any currency.

Free online discount calculator

This discount calculator makes sale math effortless. Use the first calculator to find out how much you save and what you will actually pay when an item is a certain percent off. Use the second to work backwards from an original price and a sale price to see the discount percentage. Everything updates live as you type, so you can compare deals in seconds while you shop.

How to calculate a discount

  1. Enter the original price of the item.
  2. Type the discount percentage, for example 20 for 20% off.
  3. Read how much you save and the final price you pay.
  4. Not sure of the percent? Enter the original and sale price in the second card to get it.

Understanding the numbers

The amount you save is simply the original price multiplied by the discount percent, and the final price is what remains after that saving is taken off. Working the other way, the discount percent is the saving divided by the original price. Knowing both helps you judge whether a "50% off" tag is really the bargain it seems.

Related tools

Splitting a restaurant bill instead? Try the tip calculator to work out gratuity and shares. For any other percent-off or percentage-change math, the percentage calculator has you covered. Like every tool here, this one runs fully in your browser — nothing you type is uploaded.

Frequently asked questions

How do I calculate a discount?

To find the amount you save, multiply the original price by the discount percentage and divide by 100. For example, 20% off $50 is 50 × 20 ÷ 100 = $10 saved, so the final price is $40. This calculator does the math for you the moment you type — just enter the original price and the discount percent.

How do I work out what percentage off something is?

Subtract the sale price from the original price, divide by the original price, and multiply by 100. For example, an item marked down from $80 to $60 is a discount of (80 − 60) ÷ 80 × 100 = 25% off. Use the second calculator on this page to get the percentage automatically from the original and sale prices.

What happens if the sale price is higher than the original price?

That is a price increase, not a discount, so the discount percentage cannot be negative. In that case the calculator shows 0% and a short note. Double-check that you entered the original price and the sale price in the correct boxes.

Does the currency symbol matter?

Amounts are shown with a US dollar symbol for illustration, but the math is currency-neutral. Whatever currency your prices are in, read the results as that currency — the savings and final price are calculated the same way regardless of symbol.

Is my data sent anywhere?

No. This discount calculator runs entirely in your browser using JavaScript. The prices and percentages you enter are never uploaded or stored, so it is completely private and free to use.

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