Gross margin & contribution margin calculator
Quantify unit economics and profit per customer. Use this calculator to align pricing with margin goals.
Gross margin
Measure what's left after delivery costs.
Contribution margin
Factor in variable support and infra costs.
Per-customer math
See revenue and contribution per customer.
Enter revenue and costs
Use monthly values for revenue and costs.
Founder tip
Tracking contribution margin by segment helps you decide where to invest sales and marketing.
Margin summary
Key unit economics in one view.
Gross margin
75.0%
Contribution margin
65.0%
Gross profit
$90,000
Contribution profit
$78,000
Contribution per customer
$520
Why margins drive growth
Strong gross and contribution margins let you reinvest in growth without eroding runway. Track these metrics before changing pricing or adding features.
Keyword focus
Search intent: "gross margin calculator", "contribution margin SaaS", "unit economics".
FAQs
What is gross margin?
Gross margin is revenue minus COGS, expressed as a percentage of revenue.
What is contribution margin?
Contribution margin subtracts variable operating costs from gross profit to show profit per customer at scale.
Why include customers?
Customer count helps you translate margins into per-customer economics and pricing decisions.
Is my data stored?
No. All calculations run locally in your browser and nothing is stored on the server.