Advertising ROI Calculator
Use this free advertising ROI calculator to calculate ROI, ROAS, profit ROI, CPA, conversion rate, break-even CPA, and break-even ROAS for Google Ads, Microsoft Ads, and Meta Ads.
- Compare revenue-based ROI and profit-based profitability
- Calculate ROAS, CPA, conversion rate, and break-even targets
- No signup required to run advertising ROI calculations online
An advertising ROI calculator is an online tool that helps you measure how efficiently ad spend turns into revenue and profit. It can calculate Revenue ROI, ROAS, cost per conversion, conversion rate, break-even CPA, and profit-based results when you add gross margin.
Inputs
Summary
What this advertising ROI calculator helps you measure
Revenue ROI
Shows return after subtracting ad spend. Useful for understanding whether attributed revenue is higher than spend for the selected period.
ROAS
Shows how much revenue is generated for every 1 unit of ad spend. This is one of the most common paid media efficiency metrics.
Profit-based metrics
Adding gross margin gives estimated net profit, profit ROI, break-even CPA, and break-even ROAS for a more realistic profitability view.
How do you calculate advertising ROI?
ROAS measures revenue efficiency and is calculated as Revenue ÷ Spend. A ROAS of 4.00x means every 1 spent generated 4 in revenue.
Advertising ROI measures return after subtracting ad cost and is calculated as (Revenue − Spend) ÷ Spend. An ROI of 100% means revenue was double the ad spend.
To move from revenue-based performance to profit-based performance, apply gross margin to revenue first, then subtract ad spend.
Profit ROI = ((Revenue × Margin) − Spend) ÷ Spend
Break-even ROAS = 1 ÷ Margin
Break-even CPA depends on revenue per conversion and gross profit margin.
You can use this advertising ROI calculator as a Google Ads ROI calculator, Meta Ads ROI calculator, or Microsoft Ads ROI calculator, as long as spend, revenue, clicks, and conversions are measured for the same period.
When this calculator is most useful
- Checking whether Google Ads, Microsoft Ads, or Meta Ads campaigns are profitable
- Comparing channels or campaigns using consistent spend and revenue data
- Estimating how much CPA your business can tolerate before profit disappears
- Reviewing monthly advertising performance with revenue-based and profit-based metrics
Common mistakes when calculating advertising ROI
- Mixing different date ranges for spend, revenue, clicks, and conversions
- Comparing platform numbers with inconsistent attribution settings
- Using revenue without considering gross margin
- Assuming ROAS and ROI mean the same thing
- Using clicks and conversions from different campaigns or time windows
How to use this ROI calculator
- Enter your advertising spend for the selected period.
- Add total attributed revenue, or switch to the mode with clicks and conversions.
- Optionally enter gross profit margin to calculate profit-based metrics.
- Review Revenue ROI, ROAS, CPA, conversion rate, break-even CPA, and break-even ROAS.
Example
If you spent $1,500 and generated $3,412 in revenue, your ROAS is 2.27x and your Revenue ROI is 127%.
If your gross profit margin is 50%, estimated gross profit before ad costs is $1,706, which means estimated net profit is $206. In that case, revenue ROI looks strong and profit-based performance is also positive.
FAQ
What is the difference between ROI and ROAS in advertising?
ROAS measures revenue returned for each unit of ad spend. ROI measures return after subtracting ad spend. ROAS is useful for measuring efficiency, while ROI is more directly tied to return.
How do you calculate advertising ROI?
Advertising ROI is calculated as (Revenue − Ad Spend) ÷ Ad Spend. If you add gross margin, profit ROI can be calculated as ((Revenue × Margin) − Ad Spend) ÷ Ad Spend.
What is a good ROAS for paid ads?
A good ROAS depends on your margin and business model. Businesses with lower margins usually need a higher ROAS to break even, while businesses with higher margins can be profitable at a lower ROAS.
Should ad ROI be calculated using revenue or profit?
Revenue-based ROI is useful for a quick check, but profit-based ROI is more realistic because it accounts for gross margin. Profit-based metrics are better for understanding real profitability.
What is break-even CPA?
Break-even CPA is the maximum cost per conversion you can afford before profit becomes zero. It depends on revenue per conversion and gross profit margin.
How does profit margin affect ad profitability?
Gross margin determines how much of your revenue remains before ad costs are deducted. Lower margins require stronger ROAS or lower CPA to stay profitable.
Can this ROI calculator be used for Google Ads, Meta Ads, and Microsoft Ads?
Yes. The formulas are the same across advertising platforms, so this tool works for Google Ads, Meta Ads, and Microsoft Ads as long as the data refers to the same campaign period.
How do you know if advertising ROI is good?
A good advertising ROI depends on gross margin, operating costs, and growth goals. Revenue-based ROI can look strong while profit-based ROI stays weak, so it is best to review both revenue ROI and profit ROI before deciding whether campaign performance is truly good.