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Percentage tool

Markup Calculator

Calculate markup amount, selling price, and the resulting margin from a cost and markup percentage.

Free · Private · Runs in your browser

Percentage tool

Enter cost and markup

Apply the markup percentage you choose. The margin shown is markup divided by selling price.

Your result will appear here after you submit valid values.

How the calculation works

Markup amount equals cost × markup percentage ÷ 100. Selling price equals cost plus markup. Margin equals markup divided by selling price × 100.

Conventions and boundaries

  • Markup: is applied to cost, not to selling price.
  • Margin: is reported separately because it uses selling price as its denominator.
  • Scope: taxes, fees, shipping, discounts, and pricing recommendations are outside scope.

Version and verification

Calculation version 1.0.0; deterministic fixtures last verified 2026-08-20.