Contribution Margin Calculator

Contribution margin reveals the profitability of individual products by subtracting variable costs (raw materials, sales commissions, packaging) from sales revenue.

To use the Contribution Margin Calculator, enter your Selling Price Per Unit, Variable Cost Per Unit, Total Units Sold. The calculator instantly computes Contribution Margin Per Unit, Contribution Margin Ratio and more. Results update in real time as you change any input — no submit button needed.

How to Use This Calculator

Enter your Selling Price Per Unit (e.g. 150 in ), Variable Cost Per Unit (e.g. 90 in ), and Total Units Sold (e.g. 1000 in units). Results update instantly as you type — no submit button or page reload required. Adjust any value to compare scenarios side by side.

The Formula

Contribution Margin Per Unit = Selling Price Per Unit - Variable Cost Per Unit

Contribution Margin Ratio (%) = (Contribution Margin Per Unit / Selling Price Per Unit) × 100%

Total Contribution Margin = Contribution Margin Per Unit × Total Units Sold

Worked Example

A company sells product widgets for 150 each with variable production costs of 90 per unit. 1,000 units sold.

• Contribution Margin Per Unit: 150 - 90 = 60.00/unit.

• Contribution Margin Ratio: × 100 = 40.00%.

• Total Contribution Margin: 60 × 1,000 = 60,000 (available to cover fixed costs & profit).

Understanding Your Result

Gross margin and markup measure the same relationship from opposite directions. A 50% markup (add 50% to cost) equals a 33% gross margin (33% of revenue is profit). Gross margins above 50% are typical for software and professional services; below 20% is common in retail and manufacturing. Contribution margin (revenue minus variable costs) is more useful for short-term pricing decisions than gross margin, which includes all product costs.