Calculator
Discount Calculator
Calculate sale prices, percentage discounts, original prices, tax, quantities, and savings. Add a second discount to compare stacked promotions accurately.
🔒 100% private browser calculations
Your prices stay on your device. Xepoca calculates every result locally and does not upload or store the values you enter.
Choose a calculation
Select the value you want to find, then enter the known prices.
Price settings
Results update instantly as you change any value.
Quick discount presets
Discount result
Price for one item
Final price per item
$84.00
$36.00 saved per item before tax.
Price journey
Compare the item price before discounts, after discounts, and after tax.
Savings per item
$36.00
Effective discount
30%
Tax per item
$0.00
Final total
$84.00
Price breakdown
A transparent calculation from the original subtotal to the final amount.
Total savings
$36.00
Price after discounts
$84.00
Quantity
1
How to calculate a discount
Convert the percentage discount to a decimal, multiply it by the original price, and subtract that amount from the original price. A 30% discount on a $120 item saves $36 and produces an $84 sale price before tax.
To find a discount percentage from two prices, subtract the sale price from the original price, divide the difference by the original price, and multiply by 100.
To recover an original price, divide the sale price by the remaining percentage. An item sold at 25% off retains 75% of its original price, so the sale price is divided by 0.75.
Understanding stacked discounts
Discounts are sequential
A second discount applies to the already reduced price. A 20% discount followed by 10% off creates a 28% effective discount, not 30%.
Tax is calculated separately
This tool applies tax after all discounts. Local rules may treat coupons, shipping, fees, or tax-exempt items differently.
Quantity changes totals
The per-item discount stays the same, while original subtotal, savings, tax, and final total scale with quantity.
Rounding may differ
Retailers may round each line item, tax component, or order total differently, causing small checkout differences.
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Frequently Asked Questions
Is the Discount Calculator free?+
Yes. You can calculate sale prices, discounts, taxes, quantities, and savings without creating an account.
Are the prices I enter uploaded?+
No. Every calculation runs locally in your browser, so your entered values remain on your device.
How do I calculate 30% off?+
Multiply the original price by 0.70, because a 30% discount leaves 70% of the price to pay.
Are two discounts added together?+
Usually not. Successive discounts are applied one after another. For example, 20% off followed by 10% off produces a 28% effective discount.
Can I find the original price from a sale price?+
Yes. Select Original price, enter the sale price and discount percentage, and the calculator will recover the estimated pre-discount price.
Can I find the discount percentage?+
Yes. Select Discount %, enter the original price and sale price, and the percentage difference will be calculated automatically.
Does the final price include sales tax?+
Yes, when you enter a tax rate. The estimate applies tax after the primary and additional discounts.
Why might a store total be slightly different?+
Retailer rounding, tax rules, coupon exclusions, fees, and the order in which promotions are applied can change the final checkout amount.