Discount Calculator
Calculate how much you save with any discount percentage. Enter the original price and discount to instantly see your savings and the final price you pay. Perfect for comparing deals, understanding "percent off" sales, and calculating actual costs during shopping and online purchases.
Calculate Discount
How the Calculation Works
Formula: Sale Price = Original Price × (1 - Discount %)
Or, calculate the discount amount first, then subtract: Discount Amount = Original Price × Discount %, then Sale Price = Original Price - Discount Amount
Both methods give the same result. The calculator shows both the discount amount (how much you save) and the final sale price (what you pay).
Worked Example
Example 1: An item costs $80 with a 25% discount.
- Discount Amount: $80 × 0.25 = $20
- Sale Price: $80 - $20 = $60
- You Save: $20
Example 2: A $150 shirt is 30% off.
- Discount Amount: $150 × 0.30 = $45
- Sale Price: $150 - $45 = $105
How to Use This Calculator
Stacked Discounts: If an item has multiple discounts (e.g., 20% off + additional 10% clearance), apply them sequentially, not additively. A $100 item with 20% off becomes $80, then 10% off $80 = $72 (not $70).
Smart Shopping: Use this calculator in-store or online to quickly verify sale prices. Compare discounts across items to find the best deals. Some stores offer percentage off while others show final prices—this tool standardizes the comparison.
Frequently Asked Questions
How do I calculate a discount?
Multiply the original price by the discount percentage to find savings. Example: $100 item with 20% discount = $100 × 0.20 = $20 savings. Final price = $100 - $20 = $80.
What is a good discount?
It depends on the item. Clothing discounts of 20-40% are common. Electronics 10-20% off might be good. Always compare to regular prices elsewhere to verify if a discount is genuinely good.
How do I calculate multiple discounts?
Apply each discount sequentially to the new price, not to the original. A $100 item with 20% off ($80) then 10% off ($72) = $72 final, not $70.
Is the discount before or after tax?
Discounts are typically applied before tax. So you calculate the sale price first, then add tax to that discounted amount.
How much am I really saving?
Compare the final sale price to regular prices elsewhere, not just the discount percentage. A 50% discount on an overpriced item may still be more expensive than regular prices elsewhere.