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Google Ads ROI & ROAS Calculator
Estimate the Revenue and Profit Impact of Google Ads
Most Google Ads reporting focuses on clicks and ROAS. Businesses care about revenue and profit.
This calculator connects your Google Ads spend to leads or orders, revenue, gross profit, ROAS and true ROI using your own campaign data.
Enter Your Lead Generation Details
Your Lead Generation Results
How to Use the Calculator
STEP 1
Select Your Business Type
Choose whether your business generates leads or sells products online.
The calculator automatically switches to the appropriate commercial model, ensuring the calculations reflect how your business actually generates revenue.
Step 2
Enter Your Campaign Metrics
Enter your Google Ads spend, average cost per click, conversion rates, customer value, gross profit margin and campaign costs.
Use the sliders or enter exact values manually. Every result updates instantly as you adjust your assumptions.
Step 3
Review Your Commercial Forecast
The calculator estimates clicks, leads or orders, customers, revenue, gross profit, customer acquisition cost, ROAS, break-even ROAS and true ROI.
Test different scenarios to understand how changes to CPC, conversion rate, margins or customer value affect the commercial performance of your campaigns.
How to Interpret Your Results
A high ROAS does not necessarily mean your campaigns are profitable.
ROAS measures how much revenue is generated for every dollar spent on Google Ads. It does not account for product costs, service delivery, management fees or other campaign expenses.
True ROI goes further by comparing gross profit against your total campaign investment, giving a more accurate indication of profitability.
If your ROI is positive, the projected gross profit exceeds your advertising and campaign costs based on your inputs.
If your ROI is negative, the campaign is not yet expected to recover its full investment. This may indicate high CPCs, low conversion rates, thin margins or insufficient customer value.
The break-even ROAS shows the minimum return required before your campaigns become commercially profitable.
Customer lifetime value is displayed separately to illustrate the long-term value of acquired customers without artificially inflating the ROI calculation.
If you want to validate these projections and build a profitable Google Ads strategy, our Google Ads specialists can develop a tailored forecast using your actual campaign data.
Why This Calculator Is Built Differently
Many Google Ads calculators only estimate clicks, conversions or ROAS.
That doesn't tell you whether your campaigns actually make money.
This calculator follows the commercial journey from advertising investment through to business outcomes.
It:
Separates ROAS from true ROI
Includes campaign management and additional marketing costs
Uses gross profit rather than revenue alone
Supports both lead generation and eCommerce businesses
Calculates customer acquisition cost and break-even ROAS
Shows customer lifetime value separately from ROI
Focuses on commercial outcomes instead of advertising metrics alone
The result is a more realistic estimate of how Google Ads contributes to revenue, profitability and long-term business growth.
Frequently Asked Questions:
Why does this calculator exist?
Many Google Ads tools only calculate ROAS or cost per conversion.
This calculator goes further by estimating revenue, gross profit and true ROI using your own campaign assumptions rather than generic benchmarks.
What is the difference between ROAS and ROI?
ROAS measures how much revenue is generated for every dollar spent on Google Ads.
ROI measures how much profit remains after accounting for advertising costs, campaign expenses and gross profit margin.
A campaign can achieve a high ROAS while still producing a poor ROI if margins are low or costs are high.
Why are management fees included?
Running profitable Google Ads campaigns involves more than media spend.
Management fees and other campaign costs contribute to the true investment and should be considered when evaluating profitability.
Why are there separate modes for lead generation and eCommerce?
Lead generation and eCommerce businesses generate revenue differently.
Lead generation campaigns require additional steps such as lead qualification and sales close rates before revenue is generated.
eCommerce campaigns generate revenue directly from completed purchases.
Using separate calculation models produces more realistic forecasts.
What should I do after using this calculator?
Use the forecast as a starting point for evaluating campaign viability.
The next step is validating your assumptions against real campaign data and identifying opportunities to improve profitability.
At Marketix, we use actual Google Ads performance, conversion data and commercial metrics to build strategies focused on increasing revenue, improving ROAS and delivering sustainable ROI rather than simply generating more clicks.
Ready to Make Your Google Ads More Profitable?
Get a tailored Google Ads strategy focused on increasing revenue, improving ROAS and maximising ROI.