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Attribution Window Impact Calculator
See how shorter attribution windows (1d vs 7d click) change reported ROAS and credited revenue.
Meta GA4
ROAS shift
4.29x → 2.49x
42.0% drop
1d-attributed revenue
$69,600
Lost reported revenue
$50,400
Still real revenue — just unattributed
About this tool
Switching from 7d to 1d click attribution typically drops reported ROAS 30-50%. Model the difference.
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