Discount Calculator
Enter the original price and discount percentage below, and this sale price calculator shows exactly what you'll pay and what you're saving.
About
About Discount Calculator
A discount calculator does the straightforward multiplication, price times the discount percentage, to show your exact savings and final checkout total. This sale price calculator is also where people usually realize a stacked discount, say, 50% off and then an extra 30% off, doesn't add up the way it sounds.
Two sequential discounts never simply add together, which is the detail retail signage counts on people not doing the math on. Fifty percent off followed by an additional thirty percent off isn't 80% off total, it's actually 1 minus (0.5 times 0.7), which works out to 65% off, a meaningfully smaller discount than the headline numbers suggest at a glance.
Businesses pricing a sale rely on this same math from the other direction, working out exactly what markdown percentage keeps a promotional price profitable without accidentally pricing an item below cost.
Enter the original price and the discount percentage, and the tool outputs both the dollar amount you're saving and the final price you'll actually pay at checkout.
For a stacked discount, run the calculation in sequence rather than trying to add percentages together, calculate the first markdown, then run that new subtotal through the calculator a second time for the additional discount. Your shopping queries and any business pricing you're testing stay entirely local, nothing uploads to a server.
FAQ
Frequently asked questions
How do I calculate a discount by hand?
Convert the percentage to a decimal by dividing by 100, multiply the original price by that decimal to find your savings, then subtract that savings figure from the original price for your final cost.
Can this calculate a stacked or sequential discount, like an extra coupon on top of a sale?
Not directly in one step, since discounts compound rather than simply adding. Apply the first discount, take that new subtotal, and run a second calculation for the additional discount, rather than adding the two percentages together.
Does this tool factor in sales tax?
No, it calculates the straightforward price markdown only. Sales tax varies too much by region to apply automatically, so you'd add that separately based on your local rate.
How do I figure out what discount percentage was actually applied if I only know the before and after price?
Use a percentage difference calculation between the original and new price, that tells you the exact markdown percentage the retailer applied.
Is this usable for small business retail pricing, not just personal shopping?
Yes, it works identically for either use case, no account or sign-up needed for either.
Are the prices I check here logged anywhere?
No, every calculation runs locally in your browser. Prices and discount figures you check are never tracked or stored.
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