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How to Use the Markup Calculator — WebdevToolbox Guide

Calculate the selling price and profit amount from a cost and markup percentage, where markup is a percentage of cost.

WebdevToolbox Team1 min read

“Markup” and “profit margin” get used interchangeably in casual conversation, but they’re mathematically different percentages of the same profit — confusing the two can lead to real pricing mistakes.

What Is the Markup Calculator?

A pricing tool that calculates the selling price and profit amount from a cost and a markup percentage, where markup is always expressed as a percentage of the item’s cost (not its selling price).

How to Use It

  1. Open the tool at /tools/markup-calculator.
  2. Enter the item’s cost.
  3. Enter the desired markup percentage.
  4. Read the resulting profit amount and selling price instantly.

Key Features

  • Cost-based markup calculation, selling price = cost × (1 + markup%).
  • Clear distinction from profit margin, with an explanation of why the same profit produces different markup vs. margin percentages.
  • Instant live recalculation as you adjust cost or markup percentage.
  • Simple, focused interface with no unnecessary steps.

When to Use This Tool

  • Retail and wholesale pricing, determining a selling price from a known cost and target markup.
  • Comparing supplier costs, quickly seeing how a cost change affects the final price at a fixed markup.
  • Understanding the markup-vs-margin distinction, since many pricing disagreements come down to which one was actually meant.

Try It Now

Open Markup Calculator directly, or press ⌘K and type the tool name from anywhere on the site.


Part of the Math & Numbers collection on WebdevToolbox — free, browser-based developer tools with no login required.

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