Discount Calculator — Sale Price, Percent Off and Stacked Discounts

How to use the discount calculator

1. Choose what to Find: Sale price, Discount % or Original price.
2. For a sale price, enter the Original price and the Discount. Add an Extra discount applied after if there is a second one, such as a coupon on top of a sale.
3. For the percent off, enter the Original price and the Sale price.
4. For the original price, enter the Sale price and the Discount that was applied.
5. Pick your currency and read the result, the amount saved and, for stacked discounts, the true combined discount.

What it does and when to use it

Discount maths is simple until two offers stack or you need to work backwards. This tool covers the three questions people actually ask while shopping, pricing products or checking an invoice:

• What will I pay? The sale price after one or two discounts.
• How big is this discount really? The percent off between a “was” price and a “now” price.
• What was the price before the discount? Useful when a receipt or listing shows only the final price.

Sellers can use it the other way round, to set a sale price that hits a target discount. If you are pricing for profit, pair it with the Markup & Margin Calculator so a discount does not wipe out your margin. To see how fast a card balance grows if a big purchase goes on credit, try the Credit Card Payoff Calculator.

How it works

• Sale price = original × (1 − d1 ÷ 100) × (1 − d2 ÷ 100), where d2 is the optional second discount.
• You save = original − sale price.
• Effective discount = (original − sale) ÷ original × 100.
• Discount % from two prices = (original − sale) ÷ original × 100.
• Original price = sale ÷ (1 − d ÷ 100). A discount of 100% has no original price to recover.

The calculation runs in your browser.

Worked examples

A sale plus a coupon. ₹1,000 with 20% off, then an extra 10% off. The first discount brings it to ₹800 and the second to Sale price: ₹720.00. You save ₹280, and the tool notes 20% then 10% is 28% in total, not 30%.

Finding the percent off. A price drops from ₹1,000 to ₹750. That is Discount: 25%, a saving of ₹250.

Working backwards. A receipt shows ₹720 after 28% off. The original was ₹720 ÷ 0.72 = Original price: ₹1,000.00.

Limits and tips

• The second discount only appears when finding a sale price.
• Fixed-amount coupons (for example “₹100 off”) are not built in. Subtract them by hand at the right step.
• Sales tax or GST may be added after the discount. To add tax to the final price, use a tax tool such as the GST Calculator.
• Results are shown to two decimal places. Shops may round differently at the till.