Find the sale price and how much you save, work back from a sale price to the original price, calculate the percentage of a discount, or see what several discounts in a row really come to.
Simple Discount Calculator
Calculate the final price after applying a discount.
Reverse Discount Calculator
Find original price or calculate what discount was applied.
Bulk Discount Comparison
Compare different discount scenarios and bulk pricing.
What this discount calculator does
- Basic: original price, discount percentage and quantity to the amount saved, final price and price per item.
- Intermediate: three tools in one: the original price from a sale price and a discount, the discount percentage from an original and a sale price, and stacked discounts (up to three).
- Advanced: compares your current order with a bulk tier and a premium tier, showing the total and the unit price after discount for each.
The formulas
| Calculation | Formula |
|---|---|
| Sale price | price × (1 − discount ÷ 100) |
| Original price from sale price | sale price ÷ (1 − discount ÷ 100) |
| Discount percentage | (original − sale) ÷ original × 100 |
| Stacked discounts | apply each discount to the price left after the previous one |
Worked examples: two items at $80 with a 25% discount cost $160 before and $120 after. A sale price of $75 after a 25% discount means the original was $100. Stacking 20%, then 10%, then 5% on $100 gives $68.40, an effective discount of 31.6%, not 35%, because each discount applies to a smaller amount.
Things to keep in mind
The reverse calculation is not possible for a 100% discount, so the maximum there is 99.99%. In the Advanced tab the “best deal” is the scenario with the largest total saving, which is often the biggest order, so also compare the unit prices. These results are estimates for general information only and are not financial, tax or legal advice. Check important figures with a qualified professional.
Frequently asked questions
Why are stacked discounts not simply added together?
Each discount is taken off the already reduced price, so two discounts of 20% and 10% give 28% off, not 30%.
How do I find the original price?
Divide the sale price by one minus the discount as a decimal, or use the Intermediate tab.
Looking for more? See all our free business and professional calculators.