📢 Ad Spend ROI
ROAS and cost per acquisition from ad budget
About this calculator
The Ad Spend ROI calculator tells you whether your advertising actually makes money. Enter total ad spend, the revenue those ads generated, your gross margin, and optionally clicks and conversions. It returns ROAS (return on ad spend), ROI percentage, cost per acquisition, and your break-even ROAS — the number campaigns must beat to be profitable.
ROAS equals revenue divided by spend, and ROI equals (revenue minus cost) divided by cost. Break-even ROAS is 1 divided by your gross margin — with a 50 percent margin you need at least 2:1 ROAS just to break even before overhead.
Tip: Judge campaigns on profit, not clicks. A 4:1 ROAS on a 25 percent margin product loses money after fulfillment — always check ROAS against your margin.