Online Marketing ROI Calculator — ROAS, CPA and CLV/CAC Ratio
Is your online marketing campaign profitable? Enter your total spend, revenue generated and number of conversions to calculate ROI, ROAS (return on ad spend), cost per acquisition and the CLV/CPA ratio — the key metrics for evaluating digital marketing performance.
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Campaign is profitable — profit: $13,000
$18,000
RevenueMarketing spend
27.8%
Profit
72.2%
- 1
Profit (Revenue − Spend)
18,000 − 5,000 = 13,000 - 2
ROI fraction
13,000 ÷ 5,000 = 2.6 - 3
Marketing ROI
(13,000 ÷ 5,000) × 100 = 260Positive means the campaign returned more than it cost.
How does this calculator work?
ROI = (Revenue − Spend) / Spend × 100. ROAS = Revenue / Spend (revenue per $1 spent). CPA = Spend / Conversions (cost per customer acquired). CLV/CPA ratio ≥ 3× is a healthy benchmark for sustainable acquisition. Enter your campaign spend, revenue and conversion count to get all four metrics instantly.
Formula
How this is calculated
Marketing ROI measures net profit as a percentage of investment: (Revenue − Spend) / Spend × 100. A 100% ROI means you doubled your money; a negative ROI means the campaign lost money. It is a straightforward profitability measure, but it requires accurate revenue attribution — only revenue genuinely caused by the campaign should be included.
ROAS (return on ad spend) is the gross revenue per dollar spent: Revenue / Spend. Unlike ROI it is not a profit measure — a ROAS of 3× means every $1 of ad spend generated $3 of revenue, but whether that is profitable depends on your product margins. A business with 40% gross margins needs a ROAS above 2.5× just to cover the ad cost. CPA (cost per acquisition) divides total spend by the number of conversions, giving the average cost of one customer or lead.
The CLV/CPA ratio compares customer lifetime value to acquisition cost. A ratio above 3× is generally considered healthy — it means each customer you acquire generates at least 3× their acquisition cost over their lifetime. A ratio below 1× means you are paying more to acquire customers than they are worth, which is unsustainable unless justified by strategic growth goals. Enter your average CLV to see how this ratio compares for your campaign.
Frequently asked questions
ROI (return on investment) measures net profit relative to cost: (Revenue − Spend) / Spend × 100. ROAS (return on ad spend) measures gross revenue relative to spend: Revenue / Spend. ROI accounts for the cost of the marketing, while ROAS does not deduct the spend from revenue before dividing. A ROAS of 4× equals an ROI of 300% (since profit = 3× the spend). Use ROAS for comparing campaign revenue efficiency and ROI for profitability.
A 5:1 ROAS ratio (400% ROI) is a commonly cited benchmark for profitable digital marketing in e-commerce, though the target varies by industry and product margin. High-margin products can be profitable at lower ROAS; low-margin businesses need higher ratios. The CLV/CPA ratio is often a more actionable metric: aim for CLV/CPA ≥ 3× to ensure sustainable customer acquisition.
Include all costs directly attributable to the campaign: paid media (ad spend, sponsored posts), agency or freelancer fees, creative production (copywriting, photography, video), software and analytics tools used specifically for the campaign, and any landing page development costs. Exclude ongoing overhead costs not specific to the campaign for the most accurate ROI calculation.
Also known as
TG we-Calculate Editorial Team. (2026). Online Marketing ROI Calculator — ROAS, CPA and CLV/CAC Ratio [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/online-marketing-roi-calculator
TG we-Calculate Editorial Team. "Online Marketing ROI Calculator — ROAS, CPA and CLV/CAC Ratio." TG we-Calculate. 2026. https://we-calculate.com/calculator/online-marketing-roi-calculator.
TG we-Calculate Editorial Team, "Online Marketing ROI Calculator — ROAS, CPA and CLV/CAC Ratio," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/online-marketing-roi-calculator
@misc{wecalculate_online_marketing_roi_calculator, title = {Online Marketing ROI Calculator — ROAS, CPA and CLV/CAC Ratio}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/online-marketing-roi-calculator}}, year = {2026}, note = {TG we-Calculate} }
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