ROAS Calculator
Results are estimates based on the values you enter. Recheck your inputs and assumptions before using the output for decisions.
Calculate return on ad spend from campaign revenue and ad spend, with supporting profit and efficiency benchmarks.
ROAS Calculator
Free online ROAS calculator to measure return on ad spend from campaign revenue and advertising cost. ROAS stands for return on ad spend, and it is one of the most common paid-marketing performance metrics used by advertisers, eCommerce teams, agencies, founders, analysts, and performance marketers. This calculator is useful when you want a quick answer to a simple question: how much revenue did the campaign generate for each dollar spent on advertising?
This page uses two values: revenue attributed to ads and ad spend. Revenue attributed to ads means the sales value you assign to the campaign, ad group, channel, or promotion being measured. Ad spend means the amount spent on the advertising itself. Once those values are entered, the calculator shows the ROAS ratio, gross return after ad spend, ad cost as a share of revenue, and revenue generated per $100 ad spend. That gives a clearer picture than a basic ratio alone, because it lets you see both return efficiency and the size of the remaining revenue after media cost.
The formula of ROAS
ROAS = Revenue attributed to ads / Ad spend
Gross return after ad spend = Revenue attributed to ads – Ad spend
Ad cost as % of revenue = (Ad spend / Revenue attributed to ads) x 100
Revenue per $100 ad spend = ROAS x 100
Here revenue attributed to ads means the tracked revenue generated from the campaign, ad spend means the money spent to run that campaign, ROAS means the revenue returned for each $1 spent on ads, and ad cost share means the portion of revenue consumed by media spend before other costs are considered.
Solved Example
Example 1: Find the ROAS if campaign revenue is $15,000 and ad spend is $5,000.
Solve: ROAS = 15000 / 5000 = 3.00
Gross return after ad spend = 15000 – 5000 = $10,000
Ad cost as % of revenue = (5000 / 15000) x 100 = 33.33%
Revenue per $100 ad spend = 3 x 100 = $300
Example 2: Find the result if revenue is $42,000 and ad spend is $12,000.
Solve: ROAS = 42000 / 12000 = 3.50
Gross return after ad spend = 42000 – 12000 = $30,000
Ad cost as % of revenue = (12000 / 42000) x 100 = 28.57%
Revenue per $100 ad spend = 3.5 x 100 = $350
Example 3: Find the result if revenue is $9,000 and ad spend is $4,500.
Solve: ROAS = 9000 / 4500 = 2.00
Gross return after ad spend = 9000 – 4500 = $4,500
Ad cost as % of revenue = (4500 / 9000) x 100 = 50%
Revenue per $100 ad spend = 2 x 100 = $200
Table of ROAS calculator
| Revenue | Ad Spend | ROAS | Gross Return | Ad Cost Share |
|---|---|---|---|---|
| $9,000 | $4,500 | 2.00 | $4,500 | 50% |
| $15,000 | $5,000 | 3.00 | $10,000 | 33.33% |
| $42,000 | $12,000 | 3.50 | $30,000 | 28.57% |
| $80,000 | $20,000 | 4.00 | $60,000 | 25% |
How to use this ROAS calculator
Enter the revenue attributed to ads in the proper input field. After that, enter the ad spend for the same campaign, channel, or period. Then click the calculate button. The calculator will show the ROAS ratio, gross return after ad spend, ad cost as a percentage of revenue, and revenue generated per $100 ad spend in the result box.
This calculator is useful when comparing campaigns, channels, or time periods. If one campaign has a ROAS of 4.00 and another has 2.00, the first one generates twice as much revenue for each dollar spent. That does not automatically mean it is the better business decision, but it is a strong first signal of media efficiency. Combined with margins, conversion quality, and customer value, ROAS becomes a practical tool for scaling or cutting paid traffic.
When using the result, remember that ROAS is not the same as profit. A campaign can have a positive ROAS and still be weak if product margins, returns, discounts, shipping, or overhead are high. Attribution models can also change the measured revenue a lot. Even so, ROAS remains one of the clearest quick metrics in paid acquisition analysis. This calculator gives a fast numerical view that supports campaign review, media budgeting, performance marketing, and growth planning.