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🏷️ Calculate Sale Price After Discount
Enter original price and discount percentage to see final price
$
%
Original Price
$100.00
Sale Price
$80.00
after 20% off
You Save
$20.00
🔍 Find the Discount Percentage
Know the original and sale price? Find the percentage discount
$
$
Original Price
$120.00
Discount
25%
off original price
You Save
$30.00
🔄 Find the Original Price
Know the sale price and discount? Find the original price
$
%
Original Price
$100.00
before discount
Sale Price
$75.00
Amount Saved
$25.00
⚡ Quick Discount Reference Table
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How to Calculate a Discount
Calculating discounts helps you make smarter shopping decisions, compare sale prices and understand exactly how much you are saving. Whether you are shopping online, at a store or comparing deals — our discount calculator gives you instant accurate answers.
Sale Price = Original Price × (1 - Discount% / 100)
Savings = Original Price × (Discount% / 100)
Discount% = ((Original - Sale) / Original) × 100
Examples:
20% off $150 = $150 × 0.80 = $120 (save $30)
$90 sale from $120 = ((120-90)/120) × 100 = 25% off
Sale price $75 with 25% off → Original = $75 / 0.75 = $100
Common Discount Percentages Explained
- 10% off — Move the decimal point one place left. $80 → save $8, pay $72
- 20% off — Multiply by 0.8. $50 → save $10, pay $40
- 25% off — Divide by 4 to find savings. $100 → save $25, pay $75
- 30% off — Multiply by 0.7. $200 → save $60, pay $140
- 50% off — Simply divide by 2. $120 → save $60, pay $60
Smart Shopping Tips
- Always calculate the actual savings amount — a large percentage off a cheap item may not be a great deal
- Compare sale prices across stores — a 20% off at one store may still be more expensive than regular price at another
- Watch for double discounts — some stores stack coupons on top of sale prices
- Check the original price — some retailers inflate original prices to make discounts look bigger
- Factor in shipping costs when comparing online deals
Frequently Asked Questions
How do I calculate 20% off a price? +
To calculate 20% off, multiply the original price by 0.80 (which is 1 minus 0.20). For example, 20% off $150 = $150 × 0.80 = $120. Alternatively multiply the price by 0.20 to find the discount amount, then subtract from the original price. Use our calculator above for instant results.
How do I find the original price after a discount? +
To find the original price when you know the sale price and discount percentage, divide the sale price by (1 minus the discount rate). For example, if an item costs $75 after a 25% discount: $75 / (1 - 0.25) = $75 / 0.75 = $100 original price. Use our "Find Original Price" tab above.
How do I calculate the discount percentage? +
Discount percentage = ((Original Price - Sale Price) / Original Price) × 100. For example, if an item was $120 and is now $90: ((120 - 90) / 120) × 100 = 25% discount. Use our "Find % Discount" tab above for instant calculation.
What is 15% off $200? +
15% off $200 = $200 × 0.15 = $30 discount. Sale price = $200 - $30 = $170. You save $30 and pay $170. Use our quick reference table above to instantly see common percentages off any price you enter.
How do stacked discounts work? +
Stacked discounts apply one after the other — not added together. A 20% discount followed by another 10% discount is NOT the same as 30% off. Example: $100 with 20% off = $80, then 10% off $80 = $72. Total effective discount is 28%, not 30%. Always calculate each discount separately and apply sequentially.