How do I calculate a discount?

Multiply the original price by the discount percentage divided by 100. Subtract that from the original price. For 20% off $80: $80 × 0.20 = $16 savings, final price $64.

How do I calculate the original price before a discount?

Divide the sale price by (1 − discount% ÷ 100). For example, if the sale price is $64 after 20% off: $64 ÷ 0.80 = $80.

How do I stack multiple discounts?

Apply each discount sequentially. 20% off then 10% off $100: $100 × 0.80 = $80, then $80 × 0.90 = $72. This is NOT the same as 30% off.

Is a 50% discount the same as half price?

Yes! A 50% discount means you pay half the original price.

Discount Calculator

Calculate the final price after applying a discount.

How to use

1Enter the original price — The full price before the discount.

2Enter the discount percentage — How much percent off (e.g. 20%).

3See the sale price — The final price and your savings appear instantly.

Original Price

Discount (%)

Result

$64.00

You save $16.00 (20% off $80.00)

0%100%

Step-by-step

1Calculate savings:$80.00 × 20% = $16.00

2Subtract from price:$80.00 − $16.00 = $64.00

Tab to move between fields · Results update instantly as you typeResults update instantly as you type

How Discount Percentages Work

A discount reduces a price by a given percentage. Retailers use them for seasonal sales, clearance events, loyalty rewards, and promotional campaigns. Being able to quickly calculate the final price helps you comparison-shop confidently and avoid impulse purchases that aren't actually good deals.

The Formula: Final Price = Original Price × (1 − Discount% ÷ 100)

The savings amount is simply the original price multiplied by the discount rate. For a $80 item at 20% off: $80 × 0.20 = $16 saved, leaving a final price of $64.

Smart Shopping Scenarios

Stacked discounts: A $200 jacket is 30% off, and you have a 10% member coupon. Apply 30% first ($200 → $140), then 10% ($140 → $126). Note: this is not the same as 40% off ($120).
Bulk buying: A supplier offers 15% off orders over $500. On a $750 order, you save $112.50 — paying $637.50 instead.
Comparing stores: Store A sells a TV at $899 with 25% off ($674.25). Store B lists it at $729 with 10% off ($656.10). Store B wins despite the smaller percentage.

Related Tools

If you already know the sale price and want to find the original, use our Reverse Percentage Calculator. For adding profit margins instead of removing them, the Markup Calculator is the right tool. And if you want to understand what percentage one price is of another, try What Percentage Is X of Y?

Common Discount Examples

Tap any row to open the calculator with values pre-filled — perfect for checking a sale before you buy.

Discount	Original → Sale	You save
10% off $50	$50 → $45.00	$5.00	Open
15% off $80	$80 → $68.00	$12.00	Open
20% off $100	$100 → $80.00	$20.00	Open
25% off $120	$120 → $90.00	$30.00	Open
30% off $150	$150 → $105.00	$45.00	Open
40% off $200	$200 → $120.00	$80.00	Open
50% off $250	$250 → $125.00	$125.00	Open
60% off $300	$300 → $120.00	$180.00	Open
70% off $500	$500 → $150.00	$350.00	Open