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Business Calculators

Contribution Margin Ratio Calculator

Verified formula Updated Jun 2026 Private — runs on your device

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Verified formula Private

Contribution margin ratio

40.00%

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Contribution Margin Ratio Calculator

The Contribution Margin Ratio Calculator works out your contribution margin ratio in an instant. Enter contribution margin and total revenue and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the contribution margin.
  2. Enter the total revenue.
  3. Read off your contribution margin ratio — the calculator updates automatically, with no button to press.

Formula

The Contribution Margin Ratio Calculator uses the formula:

Contribution margin ratio = Contribution margin ÷ Total revenue × 100

Worked example

For example, with contribution margin of 200,000 and total revenue of 500,000, the contribution margin ratio is 40.00%.

Inputs used
Contribution margin 200,000
Total revenue 500,000
Results
Contribution margin ratio 40.00%

Results are estimates for educational use, not professional advice.

Key terms explained

Contribution margin
Selling price minus variable cost per unit — what each sale contributes to fixed costs and profit.
Ratio
A comparison of two quantities showing how many times one contains the other.

Frequently asked questions

It is contribution margin divided by revenue, as a percentage. 200,000 on 500,000 revenue is a 40% ratio.

It shows how much of each sale is left, after variable costs, to cover fixed costs and profit.

Divide fixed costs by the ratio to find the revenue needed to break even.

Raise prices, cut variable costs, or shift sales toward higher-margin products.

The Contribution Margin Ratio Calculator uses the formula: Contribution margin ratio = Contribution margin ÷ Total revenue × 100. For example, with contribution margin of 200,000 and total revenue of 500,000, the contribution margin ratio is 40.00%.

Enter the contribution margin. Enter the total revenue. Read off your contribution margin ratio — the calculator updates automatically, with no button to press.

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