Why Use This Calculator?
'30% off' sounds great until you're standing in the aisle trying to multiply. This calculator answers the shopper's question instantly — the final price and exactly how much you save — and then flips to the seller's side with a full markup and margin mode.
Markup and margin are the classic beginner mix-up: a 50% markup on cost is only a 33% margin on price. The markup panel shows both numbers so you can price products without quietly losing money.
How It Works
- Shoppers: enter the original price and the percentage off.
- Sellers: enter your cost and your markup percentage.
- Read final price and savings — or selling price, profit, and true margin.
Frequently Asked Questions
How do I calculate a percentage off?
Multiply the price by the discount rate and subtract — or just use the tool. '30% off $129.99' lands at $90.99 with $39.00 saved, shown instantly.
What's the difference between markup and margin?
Markup is profit as a percentage of cost; margin is profit as a percentage of the selling price. A 50% markup on a $40 item means $20 profit, which is a 28.6% margin — the calculator shows both.
Do two discounts stack additively?
No — '20% off, then an extra 30% off' is 44% total, not 50%, because the second discount applies to the already-reduced price. Chain them manually if a store stacks that way.
Tips & Things to Watch
- Black Friday 'was/now' pricing is easy to verify here before you believe it.
- Sellers: price from margin goals, not markup habits — the two drift apart fast.
- Percentage-off deals on gift cards and services often have different real savings — run the numbers.