Skip to content
Allin
Sign up · Sign in

Contribution margin calculator

Compute the contribution margin per unit and its ratio from price and variable cost.

Related tools

All Pricing & margins tools →
Price from cost and target marginSet the selling price that hits a target profit margin for a given unit cost.Markup to margin converterConvert a percentage markup on cost into the equivalent profit margin on price.Cash flow margin calculatorMeasure how efficiently sales convert into operating cash. The cash flow margin divides cash flow from operations by net sales — a tougher, harder-to-manipulate profitability gauge than net margin because it uses actual cash, not accrual earnings.EBITDA margin calculatorDivide EBITDA by revenue to get the EBITDA margin — the share of sales left as earnings before interest, taxes, depreciation and amortisation. It is the go-to profitability metric for comparing companies across different capital structures and tax regimes.Net profit margin calculatorCompute the net profit margin from net income and revenue.Operating margin calculatorCompute the operating margin from operating income and revenue.Shopify Profit Margin CalculatorModel Shopify plan costs, payment fees, ads and COGS to find your true margin and break-even volume.Price & margin simulatorGet margin, margin % and markup % from cost and selling price.

Need Contribution margin, Contribution margin ratio? The Contribution margin calculator derives it from Selling price per unit, Variable cost per unit in one step. For instance, with Selling price per unit = $25.00 and Variable cost per unit = $15.00 it returns Contribution margin = $10.00 and Contribution margin ratio = 40%.

How to use it

  1. Enter your values: Selling price per unit, Variable cost per unit.
  2. Read the result instantly: Contribution margin, Contribution margin ratio.

Frequently asked questions

How does the Contribution margin calculator work?

It takes Selling price per unit and Variable cost per unit and derives Contribution margin and Contribution margin ratio from them. The calculation is live as you type, so the result updates on every change.

Which values does the calculator ask for?

2 values: Selling price per unit ($) and Variable cost per unit ($). Nothing else is required — no account, no file upload.

What does a typical calculation look like?

With Selling price per unit = $25.00 and Variable cost per unit = $15.00, the calculator returns Contribution margin = $10.00 and Contribution margin ratio = 40%. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

How much does the result change with different inputs?

It moves a lot. Using Selling price per unit = $50.00 and Variable cost per unit = $30.00 instead, Contribution margin goes from $10.00 to $20.00 — which is why it is worth testing a few scenarios rather than trusting a single figure.

What does it give for smaller values?

Scaled down to Selling price per unit = $13.00 and Variable cost per unit = $8.00, Contribution margin comes out at $5.00. The relationship is worth checking at both ends before you rely on a single result.

When would I actually use this?

Setting a price that survives contact with reality: covering costs, hitting a target margin, and checking what the marketplace and payment fees leave behind.

What is the most common mistake?

Confusing margin with markup. A 50% markup is a 33% margin, and pricing as if they were the same undercharges by a third on every unit sold.

What is the difference between the Contribution margin calculator and the Price from cost and target margin?

This one returns Contribution margin and Contribution margin ratio; the Price from cost and target margin returns Selling price and Profit per unit. That is the whole difference — open the one whose figure you need.

Is there a tool for the next step?

Markup to margin converter is the closest one after this: Convert a percentage markup on cost into the equivalent profit margin on price.

What else is worth having open alongside it?

Cash flow margin calculator and EBITDA margin calculator — they come up in the same task often enough to be worth a second tab.

Further reading

All guides →
ExplainerContribution Margin, and the Break-Even That Actually MattersGross margin nets off cost of goods sold; contribution margin nets off only the costs that vary with the unit. The gap decides your break-even, your operating leverage, and how much extra volume a price cut really needs.ExplainerThe Side-Activity Threshold Is a Rate, Not an AmountEveryone asks from what turnover a side activity starts to pay. The question has no answer, because the number that decides it is what an hour of yours is worth — and once that is in the calculation, the threshold stops being a sum of money and becomes a rate per hour that does not move with volume.ComparisonMarkup vs Margin: What's the Difference?Markup and margin both describe profit on a sale, but from different bases. Confusing them costs money — here's how each works and how to convert.ComparisonGross Margin vs Markup: The Confusion That Costs Real MoneyMargin is measured on the selling price, markup on the cost. They describe the same profit from opposite ends, they are never equal, and reading one as the other quietly removes a large slice of your gross profit.How-toHow to Calculate Your Break-Even PointYour break-even point is where revenue equals costs. Here's how to find it in units and revenue, and how to use it to make pricing decisions.ExplainerEBITDA: What It Deliberately Leaves OutEBITDA adds back the two costs that differ most between companies, which is exactly what makes it comparable — and exactly why it flatters anyone who owns a lot of equipment. Here is the same profit walked all the way down, and the maintenance-capex floor the measure never shows.