Return on ad spend calculator

Marketing teams use it to measure revenue earned per euro spent on advertising before reallocating a campaign budget.

Measure the revenue generated by each euro spent on advertising. Everything runs in your browser, so no input is uploaded or stored.

How to use

Gather the revenue credited to the advertising campaign and the full amount spent on that campaign.
Enter the ad revenue on the first line shown, then the ad spend on the second line.
Run the calculation to get the relationship between revenue and spend, expressed as advertising return.
Compare the result with your targets or other campaigns before deciding whether to adjust the budget.

Example

The sample contains a simple revenue figure and a simple spend figure. After calculating, check whether the return places the campaign above or below your break-even point, then use that reference to compare channels.

Input

1500
500

Limits and formats

The calculation depends on the two amounts you enter, so misattributed revenue immediately distorts the return shown.
It does not subtract indirect costs such as tools, salaries, or discounts unless you include them in the figure yourself.
A campaign can show a strong return but weak profit if the cost of goods sold is high.
The tool does not track live conversions and does not connect to any advertising platform.

Where processing happens

The advertising return is calculated inside your browser. The amounts you enter are not uploaded or kept by a remote service, and the result remains visible on the page until you leave it.

Frequently asked questions

Should I enter total revenue or only profit?

The tool compares ad revenue with ad spend. If you enter total revenue, the result shows gross return. To judge real profitability, you can enter a profit margin instead, as long as you stay consistent and explain which figure you used.

What does a return below one mean?

A return below one means the advertising spend is greater than the revenue entered. That does not always mean the campaign failed, but you should check attribution, missed costs, and the time period before cutting the budget.

Can I use it for several campaigns at once?

The tool handles one pair of amounts at a time. To compare campaigns, record each result and group them in a table. That gives you a clear record of the assumptions and periods being compared.