Profit Margin Calculator Guide
Understand gross margin, net margin, and markup before you change prices or cut costs.
What This Calculator Measures
This calculator separates revenue, direct cost, and operating expense so you can see whether a business is truly profitable or only appears healthy at the gross level.
Inputs You Need
You typically enter revenue, cost of goods sold, and operating expenses. Revenue should reflect actual average selling price, not list price if discounts are common. Operating expenses should include overhead such as software, rent, payroll, admin, and marketing.
Core Formulas
Gross Profit = Revenue - COGS, Gross Margin = Gross Profit / Revenue, Net Profit = Gross Profit - Operating Expenses, and Net Margin = Net Profit / Revenue. Markup is profit expressed relative to cost, not revenue.
How to Read the Output
High gross margin with weak net margin usually points to overhead pressure. Healthy net margins indicate the business keeps enough of each sales dollar to reinvest, pay owners, and absorb volatility.
Worked Example
If revenue is $30,000, COGS is $12,000, and operating expenses are $10,000, gross profit is $18,000 and net profit is $8,000. Gross margin is 60% and net margin is about 26.7%.
Common Mistakes
The most common error is mixing direct cost with overhead. Another is using markup targets when the actual business needs a margin target. Margin is the better planning metric when comparing against industry benchmarks or net profitability goals.
Open the Calculator
Run your current numbers, then use this guide to decide whether the business needs pricing or cost changes.