Markup Calculator 🔒 Your data never leaves your browser.
Calculate a selling price from cost and markup %, or the reverse.
| Markup amount | — | |
| Selling price | — | |
| Equivalent gross margin | — |
About this tool
This markup calculator works both ways. Switch to "Cost + markup % → Selling price" to enter what an item costs you and the markup percentage you want to add, and see the markup amount and the resulting selling price instantly — handy for pricing products or services from your cost sheet. Switch to "Cost + selling price → Markup %" to go the other direction: type in the cost and the price you actually charged (or plan to charge), and the calculator works backwards to reveal what markup percentage that price represents.
Markup and margin are easy to confuse because both compare a profit to a price, but they use a different base — markup is calculated on cost, while margin (and discount) is calculated on the selling price. A 50% markup on a $100 cost adds $50, giving a $150 selling price. But that same $150 selling price represents only a 33.3% gross margin ($50 profit ÷ $150 selling price), not 50%. This calculator also shows that equivalent gross-margin percentage next to your markup result, so you can see both numbers at once instead of mixing them up. Everything is computed locally in your browser, so no cost or pricing data is ever sent anywhere.
Frequently asked questions
What's the difference between markup and margin?
Markup is calculated as a percentage of COST, while margin (also called gross margin) is calculated as a percentage of the SELLING PRICE — same two numbers, different denominator. A $100 cost with a 50% markup gives a $150 selling price, but that $50 profit is only 33.3% of the $150 selling price, so the margin is 33.3%, not 50%. This tool's "equivalent gross margin" row shows both at once precisely to avoid this common mix-up.