Percentage off
Sale price = original price ร (1 โ discount percentage รท 100). A 20% discount means paying 80% of the original price.
Finance Tools
Discount Calculator
Calculate sale prices, savings and effective discounts, including fixed reductions, reverse calculations and two successive discounts.
How much does this offer save?
Calculated in your browser. No account or price upload needed.
Enter the original price and percentage off to calculate the sale price and savings.
Offer details
For 20% off, enter 20. Enter the percentage saved, not the percentage paid.
Sale price
$80.00
Amount saved
$20.00
Effective discount
20%
- Original price
- $100.00
- Sale price
- $80.00
Intermediate values are not rounded. Amounts use the selected currencyโs decimal places; store rounding rules may differ.
Compare unit prices nextTry a shopping example
Examples replace your current inputs and are illustrative only.
Currency selection changes display only, not exchange rates. Tax, delivery and other offers are excluded; check that the store allows both discounts.
Guide & Insights
Work out the actual savings on an offer
Check the original price, offer type and stacking conditions, then calculate in one currency. The sale price shows what the discounted item costs; the effective percentage helps compare offers.
- Select the calculation method and enter the original price before the offer.
- Enter the percentage off, amount off or known sale price. For successive discounts, enter both percentages.
- Read the sale price and savings. Use the unit price calculator when comparing different package sizes.
Discount formulas
Fixed reduction
Sale price = original price โ amount off. Discount percentage = amount off รท original price ร 100%.
Reverse discount
Savings = original price โ sale price. Discount percentage = savings รท original price ร 100%.
Two successive discounts
Sale price = original price ร (1 โ first discount รท 100) ร (1 โ second discount รท 100).
20% off followed by 10% off means paying 0.8 ร 0.9 = 0.72 of the original price: 28% off, not 30%.
Four worked shopping examples
30% off 500
An original price of 500 with 30% off gives a sale price of 350 and savings of 150.
50 off 200
An original price of 200 reduced by 50 gives a sale price of 150: an effective discount of 25%.
400 reduced to 280
An original price of 400 and a sale price of 280 mean savings of 120 and a 30% discount.
20% off, then 10% off
Start at 100. The first discount gives 80; the second saves another 8. The final price is 72, with total savings of 28 and an effective discount of 28%.
Scope and store conditions
This tool calculates the offers you enter; it does not fetch store prices. Successive discounts assume both offers can be combined and the second applies to the first sale price. Tax, delivery, spend thresholds and membership conditions are excluded. The original price must be greater than zero to calculate the discount percentage.
A lower sale price may not mean a lower unit price
For different sizes or item counts, calculate each discounted total first, then enter it in the unit price calculator. If the total already includes an offer, do not enter that offer again.
Compare unit prices nextFrequently Asked Questions
Q1Do I enter the percentage saved or the percentage paid?โผ
Enter the percentage saved. For 20% off, enter 20, not 80. The calculator multiplies the original price by 0.8.
Q2Why is 20% off followed by 10% off not a 30% discount?โผ
The second discount applies to the first reduced price. From 100, the first discount leaves 80 and the second saves 8, giving 72. The effective discount is 28%.
Q3How do I calculate a discount from the sale price?โผ
Choose โFrom sale priceโ and enter the original and sale prices. Subtract the sale price from the original, divide by the original and multiply by 100. A reduction from 400 to 280 is 30% off.
Q4Can I enter a free item or a 100% discount?โผ
Yes, if the original price is greater than zero. A zero sale price or 100% discount is valid. A zero original price cannot define a discount percentage.
Q5Does the currency selector convert exchange rates?โผ
No. It supports display in USD, GBP, EUR, CNY, HKD, CAD and AUD. Use the same currency for all amounts. Changing the currency does not change your entered numbers.
Q6Does the result include tax and delivery?โผ
No. Confirm tax, delivery and other offers under the storeโs rules. Intermediate values are not rounded; displayed amounts follow currency precision. Stores that round at each step may produce a small difference.
Q7Can I use the result to compare unit prices?โผ
Yes. Enter the sale price as the total cost of the packages you are buying, together with the quantity and amount per package. Do not apply an already included offer again.
Q8Are my prices saved or uploaded?โผ
Calculations run in your browser. This tool does not upload or persist price inputs. Advertising, hosting and third-party services are described in the siteโs privacy policy.
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