Percentage Off Calculator
Calculate your final price and savings when applying percentage discounts. Enter the original price and discount to see results instantly.
Your Savings
Based on your inputs, here's your final price and savings.
Final Price
$80.00
You Save
$20.00
How to Calculate Percent Off Any Price
Knowing how to calculate percent off is one of the most practical math skills for everyday life. Whether you're shopping during a sale, comparing coupon offers, or setting prices for your business, this calculation tells you exactly what you'll pay after a discount is applied. Understanding discount pricing strategies can also help you decide when and how much to discount.
The concept is simple: a "percent off" means you're removing a portion of the original price. 20% off means you remove 20 out of every 100 units of currency. The calculator above does this instantly, but understanding the math helps you estimate discounts in your head while shopping.
Why is it useful?
- Shopping Decisions: Instantly see how much you'll pay and save during sales.
- Price Comparisons: Compare final prices across different discount offers.
- Budget Planning: Know the exact amount you'll spend before buying.
- Business Pricing: Help set competitive sale prices while maintaining margins. Pair this with a markup calculator to ensure your discounted price still covers costs.
- Coupon Stacking: Figure out the real value when combining multiple discounts.
How It's Calculated
To calculate percent off a price, you only need two values: the original price and the discount percentage.
Step 1: Calculate the discount amount
- Discount Amount = Original Price x (Percentage Off / 100)
Step 2: Calculate the final price
- Final Price = Original Price - Discount Amount
Or as a single formula:
Final Price = Original Price x (1 - Discount% / 100)
Example: 20% off a $100 item
- Discount Amount = $100 x (20 / 100) = $20
- Final Price = $100 - $20 = $80
Percent Off vs. Percent Of
These two phrases sound similar but mean different things. "Percent off" refers to a discount: the amount removed from the original price. "Percent of" refers to a portion: how much of the original price you'll actually pay. If you also need to understand margins, try our gross profit calculator to see how discounts affect your bottom line.
For example, "20% off $100" means you save $20 and pay $80. But "20% of $100" means $20, the portion itself. When you calculate percent off, you're finding the remaining amount after the discount. The formula reflects this: Final Price = Price x (1 - Discount/100).
Common Discount Examples
How to calculate 10% off a price
The simplest discount to calculate in your head: move the decimal point one place to the left. 10% off $45 = $4.50 discount, so the final price is $40.50. This trick works because dividing by 10 is the same as moving the decimal.
How to calculate 15% off
Multiply the price by 0.85. A $200 item at 15% off: $200 x 0.85 = $170. You save $30. A quick mental shortcut: calculate 10% ($20) and half of that for 5% ($10), then add them.
How to calculate 20% off a price
Multiply the price by 0.80. A $50 item at 20% off: $50 x 0.80 = $40. You save $10. Mental shortcut: find 10% and double it.
What is 30% off $20?
$20 x 0.70 = $14. The discount amount is $6.
How to calculate 40% off
Multiply the price by 0.60. A $30 item at 40% off: $30 x 0.60 = $18. You save $12.
How to calculate 50% off
The easiest after 10%: just divide the price by 2. A $75 item at 50% off = $37.50.
Quick Reference Table
Use this table to quickly look up the final price for common discount percentages.
| Discount | Multiply by | $25 item | $50 item | $100 item |
|---|---|---|---|---|
| 5% | 0.95 | $23.75 | $47.50 | $95.00 |
| 10% | 0.90 | $22.50 | $45.00 | $90.00 |
| 15% | 0.85 | $21.25 | $42.50 | $85.00 |
| 20% | 0.80 | $20.00 | $40.00 | $80.00 |
| 25% | 0.75 | $18.75 | $37.50 | $75.00 |
| 30% | 0.70 | $17.50 | $35.00 | $70.00 |
| 40% | 0.60 | $15.00 | $30.00 | $60.00 |
| 50% | 0.50 | $12.50 | $25.00 | $50.00 |
How to Calculate Percent Off in Excel
If you need to calculate percent off for multiple items at once, a spreadsheet is the fastest way. Use this formula in any cell to calculate the discounted price:
=A1*(1-B1/100)Where A1 is the original price and B1 is the discount percentage. For a fixed discount, use a literal value: =A1*(1-20/100) for 20% off. This formula works in Google Sheets, Excel, and LibreOffice Calc.
Frequently Asked Questions
How do I calculate a percentage off of a price?
Divide the discount percentage by 100, multiply by the original price to get the discount amount, then subtract from the original price. Or use the shortcut: multiply the price by (1 - discount/100). For example, 25% off $80: $80 x 0.75 = $60.
How do you take 20% off a price?
Multiply the price by 0.80. This gives you the final price directly. For a $65 item: $65 x 0.80 = $52. The discount is $13.
How do you calculate 15% off?
Multiply the price by 0.85. For a $120 item: $120 x 0.85 = $102. You save $18.
What is 30% off $20?
$20 x 0.70 = $14. You save $6.
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