Skip to content
ENExplore Calculators

Contribution Margin Ratio

Free Contribution Margin Ratio calculator with clear step-by-step results.

About Contribution Margin Ratio

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

Formula

Formula

Contribution = price − variable cost; ratio = contribution ÷ price

Worked example

With the default values below, Contribution Margin Ratio returns Contribution per Unit of $10.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Selling price per unitminimum 0 $
25 $
Variable cost per unitminimum 0 $
15 $

Results

Contribution per Unit
$10.00
Contribution Margin Ratio
40.00%
Units to Cover $1,000 Fixed Cost
100.0

Step by step

  1. 1Values used
  2. 2Formula
  3. 3Contribution per Unit= $10.00
  4. 4Contribution Margin Ratio= 40.00
  5. 5Units to Cover $1,000 Fixed Cost= 100.0

Assumptions and limits

  • The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How does this calculator work?

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

Why does this matter?

Only variable costs are removed to get contribution.

Contribution Margin Ratio – Calculate Contribution per Unit