Margin Calculator

Margin Calculator is a free browser-based tool that helps you calculate profit margins, markup & target pricing. It is part of ToolsMonk's calculators collection, so you can finish the job without downloading software, creating an account, or jumping between multiple websites.

This tool is especially useful for workflows such as pricing a product to hit a target profit margin, working out the margin you're actually making on a sale, and comparing margin vs markup when setting prices. Because it runs directly in your browser, you can use it on desktop, tablet, or mobile while keeping the process fast and easy for one-off tasks as well as repeat work.

Margin Calculator is designed for people who want a practical, privacy-friendly workflow with instant results inside the larger ToolsMonk library.

Margin Calculator computes profit margin and markup from cost and selling price, and works backwards to find the price needed for a target margin — clearly separating the two concepts that businesses most often confuse.

Margin and markup describe the same profit against different bases: margin is profit over the selling price, markup is profit over the cost. That distinction isn't academic — a 50% markup is only a 33% margin, because the same profit is a smaller slice of the larger price. Mixing them up is one of the most common and costly pricing errors.

It particularly matters when pricing for a target. To achieve a 40% margin you divide cost by (1 − 0.40), not add 40% to cost (which is markup and falls short). A business that applies a 40% markup while aiming for a 40% margin actually earns only about 29% — a real shortfall that compounds across every sale.

Make sure the 'cost' you enter includes all relevant costs so the margin reflects true profit. Everything runs in your browser, keeping your figures private. Pair it with the other ToolsMonk business and finance calculators for pricing and profitability.