Discount Calculator
Don't get tricked by "double discount" deals. Use our calculator to find out exactly how much you will pay and how much you save.
Price Details
The "Double Discount" Trap
Retailers love to advertise deals like "Take an EXTRA 20% off already reduced prices!" It sounds amazing—if an item is already 50% off and you get another 20% off, that's 70% off, right? Wrong.
Discounts are multiplicative, not additive.
- Start with $100.
- Take 50% off -> Price is now $50.
- Take 20% off the $50 (which is $10) -> Price is now $40.
- Total paid: $40. Total discount: 60%.
Our calculator handles this math for you automatically so you know exactly what to expect at the register.
Common Discount Types
Percentage Off
Most common (e.g., 20% off). The saving grows with the price.
Fixed Amount Off
"$10 off coupon". Better for lower-priced items.
BOGO (Buy One Get One)
"Buy One Get One Free" is essentially 50% off if you buy two items.
Bulk Discount
Lower price per unit when buying large quantities.
Frequently Asked Questions
Frequently Asked Questions
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