Calculate return on ad spend (ROAS) — enter ad spend and revenue generated from ads to see your ROAS ratio and percentage. Results update live as you type.
Frequently Asked Questions
What is ROAS?
Return on ad spend = Revenue from ads ÷ Ad spend. A ROAS of 5× means you earn $5 in revenue for every $1 spent on advertising.
What is the difference between ROAS ratio and ROAS %?
The ratio (5×) is revenue divided by spend. ROAS % is the same figure expressed as a percentage of spend (500% = 5× return).
What is a good ROAS?
It depends on margins. E-commerce often targets 3–5× on paid social; SaaS may accept lower ROAS if LTV is high. Always factor in COGS and CAC.
How does ROAS compare to ROI?
ROAS measures ad revenue per ad dollar. Use the ROI Calculator for broader investment returns including all costs.
Is this tool free and does it work on mobile?
Yes on both counts. The Return on Ad Spend Calculator on draft21 is completely free with no sign-up required and works on all devices.