Contribution margin shows how much each sale contributes toward fixed costs and profit.

Contribution margin per unit: $48.00
Contribution margin ratio: 60.0%
Total contribution: $4,800.00

Selling price
$80.00
Variable cost per unit
$32.00
Expected units
100

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Economics

Contribution Margin Ratio Calculator

Use this when you want a cleaner ratio view of how much of each sale is left after variable costs.

This calculator helps operators focus on the contribution margin ratio so pricing and channel decisions are easier to compare across offers.

How to use this page

Start with your best current estimate, adjust the inputs until the result feels realistic, and use the related tools below when you want to pressure-test price, profit, or payout from another angle.

Measure contribution margin per unit, contribution margin ratio, and total contribution at a given volume.

Use the calculator with the examples below to test ideas quickly and come back to the same setup later.

Worked examples

Start from a realistic scenario

Each example opens the same calculator with shareable URL state.

Clean contribution ratio check

A simple product scenario where the ratio is the main planning input.

$48.00contribution margin per unit

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Higher-ticket service offer

A service sale with a strong ratio that still needs volume assumptions afterward.

$150.00contribution margin per unit

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FAQ

Quick answers

Short answers for the questions that usually come up first.

What is contribution margin ratio?

It is the share of each sale left after variable cost is removed, which makes it a strong benchmark for pricing and channel efficiency.

Why not just use contribution margin dollars?

Ratio gives you a normalized view, which is often easier to compare across products, services, or price levels.