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

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.

Accounting

Net Profit Margin Calculator

Calculate net profit margin — the percentage of revenue that remains as profit after subtracting every cost: COGS, operating expenses, interest, and taxes. Use it as the single most-cited bottom-line profitability measure when comparing companies or tracking your business over time.

Net Income ($)

Total Revenue ($)

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Key differences

	Contribution Margin Calculator	Net Profit Margin Calculator
Category	Accounting	Accounting
Inputs required	2	2
Result	Contribution Margin (%)	Net Profit Margin (%)
What it does	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.	Calculate net profit margin — the percentage of revenue that remains as profit after subtracting every cost: COGS, operating expenses, interest, and taxes. Use it as the single most-cited bottom-line profitability measure when comparing companies or tracking your business over time.