How do I calculate the sale price?

Sale price = Original price × (1 - Discount%/100). For example, $100 with 20% off: $100 × 0.80 = $80. The discount amount is $100 - $80 = $20.

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

Original price = Sale price / (1 - Discount%/100). For example, if $80 is 20% off: $80 / 0.80 = $100. This is useful when you see a sale price and want to know the original.

How do I calculate the discount percentage?

Discount% = ((Original - Sale price) / Original) × 100. For example, from $100 to $75: ((100-75)/100) × 100 = 25% discount.

How do multiple discounts work?

For multiple discounts, apply them sequentially. For example, 20% off then 10% off: First discount: $100 × 0.80 = $80. Second discount: $80 × 0.90 = $72. Total discount is 28%, not 30%.

Why verify advertised discounts?

Sometimes advertised 'original prices' are inflated to make discounts look bigger. Use this calculator to check if the math adds up. If a $75 item is advertised as 30% off from $100, but $100 × 0.70 = $70, the discount is actually 25%.

Is my shopping data sent to a server?

No. All calculations happen entirely in your browser using JavaScript. Your prices and discount information are never transmitted over the network.

Tools

Original Price

Discount %

Original Price

$100.00

Sale Price

$80.00

You Save

$20.00

Discount %: 20%

Discount Calculator — Calculate Sale Price & Savings

Free discount calculator to calculate sale prices and savings. Find original price from discounted price. Support for multiple discounts and percentage off. All calculations run locally in your browser.

Features

✓Calculate sale price from original price and discount
✓Find original price from sale price and discount
✓Calculate discount percentage from original and sale price
✓Show savings amount clearly
✓Support for multiple discount scenarios
✓Instant calculation as you type
✓Perfect for shopping and retail
✓Works for any currency
✓Helps verify advertised discounts
✓All calculations run locally in your browser

How to Use

1Choose what you want to calculate.
2Enter the known values (prices or percentages).
3View instant results showing all prices.
4See the savings amount highlighted.
5Switch between calculation modes as needed.

Frequently Asked Questions

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