Marketing ROI Calculator
Know exactly what your ad dollar returns
Every marketing dollar should be accountable. This calculator turns your campaign numbers — spend, revenue, leads — into the four metrics that investors and stakeholders actually care about: ROI, CPL, CAC, and conversion rate.
ROI
200%
Cost / Lead
$10.00
CAC
$125
Customers
25
The four metrics that matter
Understand what each number means and why it drives your campaign decisions.
ROI
Return on Investment
The ratio of net profit to ad spend. A 200% ROI means every $1 spent returns $2 in profit. Industry average is 100-200%.
CPL
Cost Per Lead
Total ad spend divided by leads generated. Tells you how efficiently your campaigns are attracting potential customers into the pipeline.
CAC
Customer Acquisition Cost
Ad spend divided by paying customers. The single most important metric for unit economics — must be lower than customer lifetime value.
Conversion
Leads → Customers
The percentage of leads who become paying customers. A low conversion rate signals friction in your funnel, not just a traffic problem.
When to use this calculator
ROI analysis isn't a one-time exercise. Here's when it delivers the most value.
Before launching a campaign
Set target ROI and work backwards. How much revenue do you need at your expected CPL and conversion rate to hit profitability?
During active campaigns
Monitor live metrics weekly. Compare actual ROI against projections and catch underperforming channels before they drain budget.
Post-campaign review
Calculate final ROI, CPL, and CAC. Use the numbers to build next quarter's budget and justify spend to stakeholders.
Campaign Data
Return on Investment
Cost Per Lead
Customer Acq. Cost
Total Customers
Insights & Recommendations
- Adjust inputs to see strategic recommendations.
Profit
$10,000
Conv. Goal
Healthy
ROI
Cost/Lead
CAC
Customers
Profit
$10,000
Conv. Goal
Healthy
Recommendations
- Adjust inputs to see recommendations.
A healthy ROI alone doesn't tell the full story. Always pair it with CAC and conversion rate. A 300% ROI with a $500 CAC may be worse than a 150% ROI with a $50 CAC if you're scaling. Use all four metrics together.
Every ad dollar should be tracked
Plug in your real campaign numbers and walk away with investor-ready metrics.