Discount Calculator
Calculate sale prices, find original prices, determine discount percentages, or ...Calculate sale prices, find original prices, determine discount percentages, or stack multiple discounts. Free, instant results with savings breakdown...
Updated
What do you want to calculate?
1Enter Values
2Results
20% off $100.00 saves you $20.00, so you pay $80.00.
Common Discount Examples
Discount Calculation Formulas
Sale Price Formula
Example: $100 with 20% off = $100 x 0.80 = $80
Discount % Formula
Example: $100 to $75 = ((100-75)/100) x 100 = 25%
Quick answer
A discount calculator works out the sale price and how much you save when a percentage or amount is taken off the original price. This one runs fully in your browser and updates instantly as you type, with one-tap presets from 10 to 70 percent, plus modes to stack two discounts in sequence or reverse the original price from a sale price. For example, 20 percent off $50 saves you $10.00, so you pay $40.00, and $80 with 20 percent then 10 percent off comes to $57.60.
Calculator Features
Why Use Discount Calculator?
4 Calculation Modes
Calculate sale price, find original price, determine discount %, or stack multiple discounts.
Instant Results
Results update in real-time as you type with no delays.
Visual Breakdown
See your savings with a visual progress bar and detailed breakdown.
Stack Discounts
Calculate double discounts like '30% off + extra 10% coupon'.
100% Private
All calculations happen in your browser. No data sent to servers.
Quick Buttons
One-click buttons for common discount percentages like 10%, 20%, 50%.
Common Uses
Online Shopping
Calculate final prices during sales and flash deals.
Retail Sales
Compare prices and find the best discount deals.
Coupon Stacking
Calculate savings when combining multiple discounts.
Price Comparison
Determine which sale offers better savings.
How It Works
Choose Calculation Type
Select what you want to calculate: sale price, original price, discount %, or double discount.
Enter Your Values
Input the required values. Use quick buttons for common discount percentages.
Get Instant Results
See your results with a detailed breakdown showing original price, discount, and savings.
Shopping Tips
Quick Mental Math
For 10% off, just move the decimal point. $45.00 → $4.50 discount → $40.50 final price.
Stacked Discount Trap
30% off + 10% off is only ~37% total savings, not 40%. The second discount applies to the reduced price.
Compare Unit Prices
A bigger discount doesn't always mean better value. Compare the final price per unit when shopping.