Age calculator
Your exact age on any date, from your DOB.
Open toolProfit margin calculator
Calculate gross profit and margin.
Your input stays in this browser. No account needed.
THE QUICK GUIDE
How to use profit margin calculator
Enter the labelled values, then process it. Copy or download the result.
How it works
Gross profit = selling price − cost; margin = profit ÷ selling price × 100.
A useful example
Cost: 75; Selling price: 100 → Gross profit: 25 Margin: 25%
Good to know
Use consistent units and currency. These are general calculations; verify important results.