Calculate the discount amount and final price after applying a percentage discount.
Example: Original price: $100, Discount: 20% → Final price: $80, Savings: $20
What this tool does
The discount calculator tells you the final price after a percentage discount and how much you save. It's perfect for sales, coupons and clearance shopping.
How discounts are calculated
The maths is simple:
Discount amount = original price × (discount% ÷ 100)
Final price = original price − discount amount
For example, 25% off a $80 item is $80 × 0.25 = $20 saved, leaving a final price of $60.
How to use it
Enter the original price.
Enter the discount percentage.
Calculate to see the amount saved and the price you'll pay.
Quick mental-maths tip
To estimate 10% of any price, move the decimal one place left. For 20%, double that; for 5%, halve it. Combine these to approximate most discounts in your head before checking the exact figure here.
Frequently Asked Questions
How do I calculate a percentage discount?
Multiply the original price by the discount percentage divided by 100 to get the savings, then subtract that from the original price.
Can I work out the original price from a sale price?
If you know the sale price and the discount percent, divide the sale price by (1 minus discount/100) to find the original price.
Does this include tax?
No. The calculator works on the listed price before tax. Add any applicable sales tax to the final price separately.
Does this tool store my data?
No. Everything runs entirely in your browser. Nothing you enter is uploaded, saved, or shared.