Marketing ROI Calculators
Free tools to measure your marketing spend efficiency. From ad-level metrics (ROAS, CPA, CPM) to total acquisition cost (CAC), these calculators help you understand what you are paying to acquire customers and whether that spend is sustainable.
Which calculator should I use?
Start with ROAS if you want a quick read on whether your ads are profitable. It answers: “For every dollar I spend on ads, how much revenue do I get back?”
Use CPA when you want to know the cost of each individual conversion. It answers: “How much am I paying per new customer or lead from ads?”
Use CPM for brand awareness campaigns where impressions matter more than direct conversions. It answers: “How much does it cost to get my ad in front of 1,000 people?”
Use CAC for the big picture. Unlike the others, CAC includes all sales and marketing costs, not just ad spend. It answers: “What is the total cost to acquire a customer, and is my growth sustainable?”
ROAS Calculator
Return on Ad Spend
Measure revenue earned per dollar of ad spend. See your break-even ROAS and net profit from advertising.
CPA Calculator
Cost Per Acquisition
Calculate what you pay to acquire each customer through ads. Compare CPA by channel and see your max allowable CPA.
CPM Calculator
Cost Per Thousand Impressions
Calculate your cost per 1,000 ad impressions. Compare CPM across platforms and evaluate awareness campaign efficiency.
CAC Calculator
Customer Acquisition Cost
Calculate your full customer acquisition cost including all sales and marketing spend. See your LTV:CAC ratio and payback period.
How These Metrics Relate
These four metrics form a funnel from broadest (CPM) to most comprehensive (CAC):
CPM (Impressions)
How much does it cost to show your ad? This is the top of the funnel. Low CPM means efficient reach, but reach alone does not drive revenue.
CPA (Conversions)
How much does each conversion cost? CPA combines your CPM and conversion rate into a single actionable number.
ROAS (Revenue)
How much revenue does each ad dollar generate? ROAS puts CPA in context by comparing it to the revenue each customer brings.
CAC (Total Cost)
What is the full cost to acquire a customer? CAC includes sales, tools, and overhead that CPA and ROAS miss. Pair with LTV for the complete picture.
These calculators provide estimates for planning purposes only and do not constitute financial, legal, or tax advice. Consult a qualified professional for advice specific to your situation.