Definition
Return on ad spend (ROAS) measures how much revenue a business generates for every dollar spent on advertising. The formula is straightforward: revenue attributed to an ad campaign divided by the cost of that campaign.
The problem is attribution. Most ROAS calculations only count digital conversions, clicks, and form fills. Phone calls, which often represent the highest-intent leads in the funnel, go uncounted.
That gap is where ROAS breaks down for multi-location businesses and service categories where customers call before they buy. A campaign that looks unprofitable on a dashboard may be driving significant inbound call volume. Without call attribution, that revenue stays invisible.
Convirza connects inbound call data to ad campaigns so phone-driven revenue gets counted in ROAS calculations, not written off. Built on 25 years of proprietary call data, the platform ties calls back to the specific keyword, channel, or campaign that generated them.
The result is a ROAS number that reflects what ads actually produce, not just what a pixel can see.
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