Profit Margin Calculator

A profit margin calculator computes gross, operating, and net profit margins — the key measures of how efficiently a business converts revenue into profit. Use this calculator for accurate, instant results.

The calculator uses the standard published formula for profit margin. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, British pounds. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Gross margin = (Revenue − COGS) / Revenue × 100. Each step in the calculation is shown so you can verify the result manually.