Age calculator
Your exact age on any date, from your DOB.
Open toolSet a selling price from cost and markup.
Enter the labelled values, then process it. Copy or download the result.
Selling price = cost × (1 + markup ÷ 100); markup is measured against cost.
Cost: 100; Markup (%): 25 → Selling price: 125 Gross profit: 25
Use consistent units and currency. These are general calculations; verify important results.