Someone spends $10,000 on Meta ads and the dashboard flashes "5.2x ROAS" back at them, and it feels like a win. Maybe it is. But most founders searching what does 5x ROAS mean ecommerce aren't asking for the definition, they're asking whether their number is actually good, and that's a different question entirely.

Here's the plain version first: ROAS stands for Return on Ad Spend. It measures how much revenue you generate for every dollar you put into advertising. A 5x ROAS means $5 in revenue for every $1 spent on ads.