Percent Off Calculator
A percent off calculator turns a discount into a price: it shows what you pay and how much you save when an item is a given percent off. It also works backwards, finding the percent off between two prices or the original price from a sale price, and it handles an extra discount stacked on top of a sale.
25% off means you pay 75% of the price
3 Percent Off Formulas
A discount links three numbers: the original price, the percent off and the sale price. Know two, find the third.
Find the Sale Price
"$80 with 25% off."
Find the Percent Off
"Was $120, now $90."
Find the Original Price
"Paid $45 after 40% off."
Why 25% + 10% Off Isn't 35% Off
When a store offers "an extra 10% off sale prices", the second discount comes off the already-reduced price. Use the extra % off box above to stack discounts.
Common Discounts at a Glance
The multiplier is the share of the price you pay. The last column shows each discount on an $80 item.
| Discount | You pay | Multiply by | $80 item |
|---|---|---|---|
| 10% off | 90% | 0.9 | $72.00 |
| 15% off | 85% | 0.85 | $68.00 |
| 20% off | 80% | 0.8 | $64.00 |
| 25% off | 75% | 0.75 | $60.00 |
| 30% off | 70% | 0.7 | $56.00 |
| 40% off | 60% | 0.6 | $48.00 |
| 50% off | 50% | 0.5 | $40.00 |
| 60% off | 40% | 0.4 | $32.00 |
| 70% off | 30% | 0.3 | $24.00 |
| 75% off | 25% | 0.25 | $20.00 |
How to Use the Percent Off Calculator
Get a sale price, a discount or an original price in 4 steps.
-
Pick What You Want
Sale price, Find the % off, or Find the original price.
-
Enter the Prices and Percent
Type the numbers from the price tag or receipt.
-
Add an Extra Discount (Optional)
In Sale price mode, enter a coupon or "extra % off" to stack it on the sale.
-
Read Your Savings
See the price, what you save, the share you pay and the total discount, with every step.
Percent Off on a 4 Function Calculator
Each formula is a few key presses on any basic calculator.
25% off $80
$120 → $90
Paid $45 at 40% Off
Comparing Deals
Turn every offer into a percent off, or a final price, before deciding.
$10 Off or 20% Off?
On a $40 item, $10 off is 25% off ($30), while 20% off is $32. On a $60 item, 20% off wins ($48 vs $50).
Clearance Plus Extra
40% off, then an extra 20% off at the register: 0.6 × 0.8 = 0.48, so you pay 48%, a total of 52% off.
Tax Comes After
An $80 jacket at 25% off is $60. With 8% sales tax you pay 60 × 1.08 = $64.80. Use the Sales Tax Calculator for the tax step.
Read How to Calculate a Discount for shopping math by hand, or use the Percentage Change Calculator to see how much a price went up. Comparing package sizes? Try the Unit Price Calculator. Running the sale? The Margin Calculator shows how a discount cuts your profit.
Explore Other Calculators
Frequently Asked Questions
How do I calculate percent off?
Multiply the price by 1 minus the discount as a decimal. For 25% off $80, multiply 80 × 0.75 = $60. You save 80 − 60 = $20.
What is 30% off $50?
30% off $50 is $35. You pay 70% of the price: 50 × 0.7 = 35, and you save $15.
How do I find the original price before a discount?
Divide the sale price by 1 minus the discount as a decimal. If you paid $45 after 40% off, the original price was 45 ÷ 0.6 = $75.
Is 20% off and then another 20% off the same as 40% off?
No. The second discount is taken from the already reduced price. You pay 0.8 × 0.8 = 0.64 of the original, which is 36% off in total, not 40%.
How do I work out what percent off a sale is?
Subtract the sale price from the original, divide by the original, and multiply by 100. A $120 item on sale for $90 is (120 − 90) ÷ 120 × 100 = 25% off.
Is sales tax charged on the original price or the sale price?
In most places sales tax is charged on the price you actually pay after store discounts. Rules for manufacturer coupons vary by state and country, so check your receipt.