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 Calculator

Use this when you want the cleanest view of how much each sale contributes after variable costs.

This calculator isolates contribution margin so you can compare offers, channels, or price changes without mixing in fixed overhead too early.

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.

Core offer margin check

A simple unit contribution scenario for a repeatable sale.

$48.00contribution margin per unit

Load this example

Higher-ticket service package

A service with a stronger selling price but also higher direct delivery cost.

$150.00contribution margin per unit

Load this example

FAQ

Quick answers

Short answers for the questions that usually come up first.

Why separate contribution margin from gross profit?

Contribution margin focuses on variable cost behavior, which makes it useful for pricing and channel decisions before fixed overhead is layered in.

Can this be used for services too?

Yes. If you can estimate variable delivery cost per project or per unit, the same logic still applies.