Percent Off Calculator
Free percent off calculator. Calculate sale prices, discounts, and savings instantly. Find out how much you'll pay after 10%, 20%, 30% off or any discount.
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Understanding results
The calculator displays:
- Sale Price: The final price you'll pay after the discount
- Savings: The dollar amount you're saving
- Original Price: The regular price for reference
- Discount Percentage: The percent off applied
This breakdown helps you quickly evaluate deals and compare savings.
Purpose
The percent off calculator helps you instantly find the sale price after a discount. Whether you're shopping during a sale, comparing deals, or planning your budget, this tool shows you the exact price you'll pay and how much you'll save.
Never wonder about sale prices again—enter the original price and discount percentage to see your savings instantly. Perfect for Black Friday deals, clearance sales, coupon calculations, and everyday shopping.
How to use
Using the percent off calculator:
- Enter the Original Price: Input the item's regular price before the discount.
- Enter the Discount Percentage: Input the percent off (e.g., 25 for 25% off).
- View Results: See the sale price you'll pay and the dollar amount you'll save.
Examples
Example 1: 25% Off Sale
A $200 jacket is 25% off.
- Sale Price = $200 × 0.75 = $150
- You save $50
Example 2: 40% Off Clearance
Shoes originally $89.99 are 40% off.
- Sale Price = $89.99 × 0.60 = $53.99
- You save $36.00
Example 3: 15% Off Coupon
A $65 purchase with a 15% off coupon.
- Sale Price = $65 × 0.85 = $55.25
- You save $9.75
Example 4: 50% Off Half-Price Sale
An $120 item at 50% off.
- Sale Price = $120 × 0.50 = $60
- You save $60
How it works
Formula: Sale Price = Original Price × (1 - Discount ÷ 100)
Example: $150 with 20% off
- Convert discount: 20% = 0.20
- Remaining portion: 1 - 0.20 = 0.80
- Sale Price: $150 × 0.80 = $120
- Savings: $150 - $120 = $30
FAQ
How do I calculate 20% off?
Multiply the original price by 0.80. For example, 20% off $50 = $50 × 0.80 = $40. Alternatively, find 20% ($50 × 0.20 = $10) and subtract: $50 - $10 = $40.
How do I calculate 30% off?
Multiply the original price by 0.70. For example, 30% off $100 = $100 × 0.70 = $70. You save $30.
What is the formula for calculating discount?
Sale Price = Original Price × (1 - Discount%/100). Or calculate savings first: Savings = Original Price × (Discount%/100), then Sale Price = Original Price - Savings.
How do I calculate the original price from a sale price?
Divide the sale price by (1 - Discount%/100). For example, if the sale price is $75 after 25% off: Original = $75 ÷ 0.75 = $100.
How do I stack multiple discounts?
Apply each discount sequentially. For 20% off then another 10% off $100: First discount: $100 × 0.80 = $80. Second discount: $80 × 0.90 = $72. Note: This is NOT the same as 30% off ($70).
What's better: $20 off or 20% off?
It depends on the price. For items under $100, $20 off is better. For items over $100, 20% off is better. At exactly $100, they're the same.
Methodology
The percent off formula is:
Sale Price = Original Price × (1 - Discount%/100)
Or:
Savings = Original Price × (Discount%/100)
Sale Price = Original Price - Savings
Example Calculation
A $80 item is 30% off:
- Savings = $80 × (30/100) = $24
- Sale Price = $80 - $24 = $56
Quick Reference
| Discount | Multiply By |
|---|---|
| 10% off | 0.90 |
| 20% off | 0.80 |
| 25% off | 0.75 |
| 30% off | 0.70 |
| 40% off | 0.60 |
| 50% off | 0.50 |
Sources
Based on standard retail discount calculations used worldwide in commerce and shopping.