Percent Off Calculator
Three questions hide behind “percent off”, and this page answers all three: what you pay after a discount, what the original price was before it, and what percentage a price drop actually represents. The calculator handles the first, including two stacked discounts; the other two are one division each, worked through below.
Your savings will appear here
Enter the original price and percent off, then click calculate to see your final price.
Three Questions, Three Directions
“Percent off” gets used for three different problems. They share one relationship, read in three directions, and knowing which one you have makes it a single step.
1. You know the price and the discount, and want the sale price. Multiply. A $49.99 item at 25% off is $49.99 × 0.75 = $37.49. This is what the calculator above does, and it will stack a second discount for you.
2. You know the sale price and the discount, and want the original. Divide. A jacket marked $89.99 at 40% off started at $89.99 ÷ 0.60 = $149.98. This is the one people get wrong most often, because adding 40% back onto $89.99 gives $125.99 — a different number. The percentage was taken off the larger price, so it has to be divided out of the smaller one, not added back on.
3. You know both prices, and want the percentage. Divide the saving by the original price. A $120 jacket now selling at $90 has been cut by $30, and $30 ÷ $120 = 25% off. Always divide by the original price, never the sale price.
The discount calculator has directions two and three built in as their own modes, if you would rather not do the division yourself.
Common Percent Off Prices
Real shelf prices rather than round numbers, because $12.99 is the awkward case and $50 is not. Amounts are rounded to the nearest cent.
| Discount | Original | You save | You pay |
|---|---|---|---|
| 15% off | $34.99 | $5.25 | $29.74 |
| 20% off | $19.99 | $4.00 | $15.99 |
| 25% off | $49.99 | $12.50 | $37.49 |
| 30% off | $24.99 | $7.50 | $17.49 |
| 40% off | $12.99 | $5.20 | $7.79 |
| 50% off | $89.99 | $45.00 | $44.99 |
| 60% off | $129.99 | $77.99 | $52.00 |
| 70% off | $59.99 | $41.99 | $18.00 |
Percent Off or Discount Calculator?
Two tools here cover similar ground, so this is the honest split rather than a nudge toward whichever page you happen to have landed on.
Stay here when the discount is a percentage, and especially when two of them stack — 40% off, plus an extra 10% at the till. Stacking is the one thing this calculator does that the other one does not, and it is exactly the case people get wrong in their heads.
Use the discount calculator when the discount is a flat dollar amount rather than a percentage, when you want it to solve backwards to the original price for you, or when you need sales tax added on top of the discounted price. It has four modes and covers those; it will not stack two discounts.
Quick Answer
To find the sale price, multiply the original price by (100 − percent off) ÷ 100 — so 40% off $12.99 is $12.99 × 0.60 = $7.79, a saving of $5.20. To go backwards from a sale price to the original, divide instead of multiplying: $7.79 ÷ 0.60 = $12.99. To find the percentage, divide the amount saved by the original price: $5.20 ÷ $12.99 = 40%.
How It Works: Formula & Variables
Discount Amount = Original Price × (Percent Off ÷ 100); Final Price = Original Price − Discount Amount
- Original Price
- The price of the item before any discount is applied.
- Percent Off
- The percentage of the original price taken off as a discount.
Worked Examples
Example 1: Single discount
A $120 jacket is 25% off. Discount = $120 × 0.25 = $30, so the final price is $90.
Example 2: Stacked discounts
An $84.99 item is 40% off, plus an extra 10% off at checkout. First discount: $84.99 × 0.40 = $33.996, dropping the price to $50.99. Second discount: $50.99 × 0.10 = $5.10, for a final price of $45.89. Stacked discounts apply sequentially, not added together.
Example 3: An uneven price
A $12.99 item is 10% off. Discount = $12.99 × 0.10 = $1.30 (rounded), so the final price is $11.69.
Key Concepts
Stacked discounts compound: A second discount applies to the already-discounted price, so they never simply add. 40% off then 10% off is 0.60 × 0.90 = 0.54, an effective 46% off rather than the 50% the two numbers suggest. The order they are applied in makes no difference to the result.
"Percent off" vs. "percent of": These two phrases are easy to confuse — percent off is what you subtract, while percent of is what you'd pay.
Check sale math against the receipt: Retailers sometimes round differently at checkout, so it's worth confirming the final price matches your calculation.
Common Mistakes
Adding discount percentages together: Treating 40% off plus 10% off as 50% off overstates your savings — the discounts apply sequentially instead.
Confusing final price with discount amount: The amount you save is not the same as the price you'll actually pay.
Forgetting sales tax timing: In most jurisdictions, sales tax is calculated on the discounted price, not the original price.
Frequently Asked Questions
It means you pay 75% of the original price — the discount amount is 25% of the price, subtracted from the total.
Apply the first discount to get a new price, then apply the second discount to that new price — don't add the two percentages together, since that overstates your savings.
In most cases, the discount is applied first to get the sale price, and sales tax is then calculated on that discounted amount.
Divide the sale price by (1 − discount as a decimal). For example, a $75 sale price at 25% off means $75 ÷ 0.75 = $100 original price.
10 percent off means you subtract one-tenth of the original price. On a $50 item, 10% off is $5, bringing the price down to $45.
Multiply the original price by 0.40 to get the discount amount, then subtract that from the original price. On a $50 item, 40% off is $50 × 0.40 = $20 off, for a final price of $30.
Related Calculators
Add the tax to get what you actually hand over
In almost every US state, sales tax is charged on the discounted price rather than the ticket price — so a discount saves you the tax on it too. Take the sale price into the sales tax calculator for the amount at the register, or the VAT calculator if you are shopping somewhere that quotes prices with tax already included.
Assumptions
- Amounts are rounded to the nearest cent at the end of the calculation. A retailer that rounds at a different point can land a cent away from the figure shown here.
- Stacked discounts are applied one after the other. Some stores cap the combined discount or exclude already-reduced items from a second offer, so the receipt is the authority, not the arithmetic.
- No sales tax is included in any figure on this page. In most US jurisdictions it is charged on the discounted price — see the sales tax calculator.