Discount Calculator
A tag says $79.99, the sign says 30% off, and you want to know the real sale price before you reach the register. Enter the original price and the discount percentage to see the amount taken off and the final price in one step.
How to calculate a discount
-
1
Enter the original price
Type the price before the percent-off discount is applied.
-
2
Enter the discount percent
Use the percentage shown on the sale tag, coupon or promo code, such as 20 or 35.
-
3
Read the result
See the discount amount, the final price and how much you save.
-
4
Keep extras separate
The calculator handles the discount only. Add sales tax, delivery fees or store credit separately if they apply.
The formulas
- Discount amount:
original * discount / 100 - Final price:
original - discountAmount - Savings:
discountAmount
The calculation works with any currency as long as you use the same unit for the original price and the result. A 25% discount on $80 saves $20 and leaves a final price of $60.
Handy reference
| Discount | You pay | Example from $100 |
|---|---|---|
| 10% | 90% | $90 |
| 15% | 85% | $85 |
| 20% | 80% | $80 |
| 25% | 75% | $75 |
| 30% | 70% | $70 |
| 40% | 60% | $60 |
| 50% | 50% | $50 |
| 60% | 40% | $40 |
| 70% | 30% | $30 |
| 75% | 25% | $25 |
Checkout checks
- Use the real starting price. If a retailer compares against a “was” price, use the reference price printed on the tag or product page.
- Separate percent and cash discounts. This tool calculates a percentage. For a $10 coupon, subtract the coupon after you calculate the percent-off price.
- Apply one percent discount at a time. For “30% off, then an extra 20% off”, calculate 30% first, then use that lower price as the new original price for the second discount.
- Watch taxes and fees. Sales tax, VAT, shipping and service fees can change the amount you pay, but they are outside this calculator.
Quick sale example
A $64 item with 35% off has a discount amount of $64 * 35 / 100 = $22.40. The final price is $64 - $22.40 = $41.60. If a store rounds prices to the nearest cent, compare the receipt against that rounded final price.
Frequently Asked Questions
No. It calculates the discount amount and final price before any extra tax, delivery or service fee. Add those separately if they appear at checkout.
This page is for forward calculations: original price plus discount percent gives the final price. To reverse it, subtract the sale price from the original price, divide by the original price, then multiply by 100.
Run the calculator once for the first percentage, then use the final price as the new original price for the second percentage. Two discounts are applied in order, not added together.
Only enter the price numbers needed for the calculation. Do not include order numbers, names, card details or anything personally sensitive.
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