--- title: "ROAS Calculator - Return on Ad Spend" description: "ROAS calculator for return on ad spend as a multiple, ratio and percentage, with optional break-even ROAS from gross margin. Free and private." url: https://candoya.com/tools/roas-calculator/ locale: en type: browser-tool --- # Free ROAS Calculator Category: [Calculators](https://candoya.com/tools/calc/) ## What does a ROAS calculator measure? A ROAS calculator divides revenue attributed to advertising by the cost of those ads. It shows how much revenue came back for each unit of ad spend as a multiple, ratio, and percentage. Add gross margin to estimate the ROAS needed to cover product costs and ad spend. ROAS measures revenue efficiency, not net profit. It excludes product costs, payroll, agency fees, refunds and other expenses unless they affect the revenue or ad-spend figures you enter. The calculation runs in your browser, and the amounts are not uploaded. ## How to use it 1. **Enter attributed revenue** - Use the revenue credited to one campaign, channel or reporting period. 2. **Enter matching ad spend** - Add the media cost from the same scope and period; results update live. 3. **Add margin if useful** - Optionally enter gross margin to estimate break-even ROAS and contribution after ad spend. 4. **Compare or copy** - Read the multiple, ratio, percentage and supporting figures, then copy the result for a report. ## Who it's for - **Paid media teams** comparing Google Ads, Meta Ads or other campaigns on the same attribution basis. - **E-commerce operators** checking whether campaign ROAS clears a margin-based break-even threshold. - **Agencies** turning client revenue and media spend into a clear multiple, ratio and percentage. - **Founders and analysts** checking a dashboard value or planning the revenue needed from an ad budget. ## Expert note Platform-attributed revenue can overlap when several ad platforms claim the same sale. Compare campaigns with one consistent attribution window, and reconcile channel totals against revenue recorded by your store or billing system before treating ROAS as incremental growth. ## Frequently asked questions ### Is this ROAS calculator free? Yes. The ROAS calculator is free, requires no sign-up and can be used repeatedly. Enter revenue and ad spend to get the multiple, ratio and percentage. Gross margin is optional and only adds break-even context; it does not change the core return-on-ad-spend calculation. ### Is my campaign data uploaded? No. The calculation runs locally in your browser, so the revenue, ad spend and gross margin you enter are not uploaded. You can clear the fields when finished. The page needs no account and makes no server request to calculate or format the result. ### What are the calculator limits? Revenue and ad spend must be non-negative and no greater than 999,999,999,999,999. Ad spend must be above zero because it is the formula denominator. Gross margin is optional and accepts values from 0% through 100%. The calculator handles common comma and dot number formats. ### What is the ROAS formula? ROAS equals attributed revenue divided by ad spend. A campaign with 24,000 in attributed revenue and 6,000 in ad spend has a 4x ROAS, also written as 4:1 or 400%. These formats describe the same revenue-to-spend relationship. ### What does 500% ROAS mean? A 500% ROAS means the campaign produced five units of attributed revenue for each unit spent on advertising. It is the same result as 5x or 5:1. It does not mean 500% profit because product costs and other operating expenses are not included. ### What is a good ROAS? There is no universal good ROAS. The useful threshold depends on gross margin, refunds, agency fees, overhead and how accurately revenue is attributed. A 2x result may work for a high-margin business, while a low-margin seller may need 4x or more before the campaign contributes profit. ### How do I calculate break-even ROAS? Divide 100 by gross margin percentage, or divide 1 by gross margin as a decimal. At 40% gross margin, break-even ROAS is 2.5x because 40% of 2.5 in revenue equals 1 in gross profit before ad spend. Other operating costs can raise the true threshold. ### What is the difference between ROAS and ROI? ROAS divides attributed revenue by advertising cost and focuses on media efficiency. ROI subtracts costs from the return and divides the gain or loss by the investment. A campaign can report a strong ROAS but weak ROI when product costs, fees, refunds or overhead consume the revenue. ## Related tools - [ROI Calculator](https://candoya.com/tools/roi-calculator/) - [Profit Margin Calculator](https://candoya.com/tools/profit-margin-calculator/) - [Break-even Calculator](https://candoya.com/tools/break-even-calculator/) - [Gross Margin Calculator](https://candoya.com/tools/gross-margin-calculator/) - [Percentage Calculator](https://candoya.com/tools/percentage-calculator/) --- *Markdown edition of , published for AI agents and other automated readers. Index of key pages: .*