How much signal are you losing without server-side tracking? Plug in your pixel-only and CAPI-included conversion numbers to find out.
Signal recovered with CAPI
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Conversions missed by pixel
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Lost attributed revenue
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Inflated cost-per-purchase
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This tool assumes your CAPI-included conversion count is closer to ground truth than the pixel-only number. That's usually true in 2026 — most decay is browser-side.
Lost attributed revenue is missed conversions × AOV. The revenue still happened; you just didn't see it in Ads Manager — which means your CPP looked worse and the algorithm optimized on broken signal.
Inflated CPP compares pixel-only cost-per-purchase to CAPI-included cost-per-purchase. If you're bidding on target CPA, that gap is real money.