Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Operating Margin Calculator

Calculate operating margin — operating income divided by revenue — to see how much of every sales dollar a company keeps after covering all operating costs but before interest and taxes. Use it as the cleanest measure of pure operational efficiency, independent of capital structure or tax jurisdiction.

Operating Income ($)

Total Revenue ($)

Fill in the required fields to see your result.

Accounting

Contribution Margin Calculator

Shows what percentage of sales revenue remains after covering variable costs to pay for fixed costs and profit. Use it for break-even analysis, pricing decisions, and product profitability comparisons.

Sales Revenue ($)

Variable Costs ($)

Fill in the required fields to see your result.

Key differences

	Operating Margin Calculator	Contribution Margin Calculator
Category	Accounting	Accounting
Inputs required	2	2
Result	Operating Margin (%)	Contribution Margin (%)
What it does	Calculate operating margin — operating income divided by revenue — to see how much of every sales dollar a company keeps after covering all operating costs but before interest and taxes. Use it as the cleanest measure of pure operational efficiency, independent of capital structure or tax jurisdiction.	Shows what percentage of sales revenue remains after covering variable costs to pay for fixed costs and profit. Use it for break-even analysis, pricing decisions, and product profitability comparisons.