Discount Calculator
Calculate discounts and final prices instantly. Find discount amounts, savings, and final prices. Includes reverse calculator and multiple discount stacking.
Enter original price and discount percentage to see final price
💡 All calculations happen in your browser. No data is sent to any server.
This calculator provides estimates for reference purposes. Always verify final prices before making purchases.
Embed This Tool
Add this tool to your website with customizable styling
How to Use
- 1 Choose your calculator mode — Standard: Know the original price and discount percentage? Find the final price. Reverse: Know the original and final prices? Calculate the discount percentage. Stacking: Apply multiple discounts sequentially (e.g., "20% off, then 10% off").
- 2 Enter the original price in the first field (e.g., $100.00).
- 3 Enter discount information based on your selected mode — Standard: Enter the discount percentage (e.g., 20 for 20% off). Reverse: Enter the final price after discount (e.g., $80.00). Stacking: Enter comma-separated discount percentages (e.g., "20,10,5").
- 4 View your results with the "You Save" amount highlighted in green 🎉.
- 5 Understand stacking — Discounts are applied sequentially, not additively. For example, 20% + 10% = 28% effective discount (NOT 30%), because the second discount applies to the already-reduced price.
- 6 Copy your results using the "Copy All Results" button to share or save them.
💡 Pro Tip: Use stacking mode to calculate real-world scenarios like "20% off sale + 10% coupon code" to see your actual savings!
Frequently Asked Questions
How does discount stacking work?
Discount stacking applies discounts sequentially, not additively. For example, if you have a $100 item with a 20% discount followed by a 10% discount:
- Step 1: $100 - 20% = $80 (saved $20)
- Step 2: $80 - 10% = $72 (saved $8)
- Total saved: $28 (28% effective discount, NOT 30%)
Each discount applies to the reduced price from the previous step, not the original price. The order doesn't matter mathematically (20% + 10% = 10% + 20%).
What's the difference between Standard and Reverse mode?
Standard mode: Use when you know the original price and discount percentage, and want to find the final price and savings. Example: "This $100 item is 20% off. What's the final price?"
Reverse mode: Use when you know the original price and final price, and want to calculate what discount percentage was applied. Example: "This item was $100, now it's $80. What's the discount percentage?"
Can I use this for sales and promotions?
Absolutely! This calculator is perfect for:
- Black Friday / Cyber Monday: Calculate your actual savings on stacked discounts
- Coupon codes: See the final price after applying store sale + coupon
- Clearance sales: Understand "additional 20% off already reduced prices"
- Comparing deals: Which is better: 30% off or 20% + 15% stacked?
Why is my stacked discount less than the sum of percentages?
This is how discount math works! When you stack discounts, each subsequent discount applies to the already-reduced price, not the original price.
Example: $100 with 20% + 10% discounts:
- First discount: $100 × 20% = $20 off → $80 remaining
- Second discount: $80 × 10% = $8 off → $72 final price
- Total saved: $28 (28% effective, not 30%)
If both discounts applied to the original $100, you'd save $30 (20% + 10% = 30%). But that's not how stacking works in real retail scenarios. The order of discounts doesn't matter (20% then 10% = 10% then 20%), but the result is always less than simply adding the percentages.
⚠️ Important: Always verify final prices and discounts with the seller before making a purchase. Retailers may apply discounts differently, and some may exclude certain items from stacking promotions.