Ad revenue per thousand funnel impressions is calculated by dividing your estimated earnings resulting from a funnel request by the number of funnel impressions that you received, then multiplying by 1,000.
Funnel RPM = (Estimated earnings resulting from the funnel / funnel impressions) * 1,000
Learn more about the funnel for a related search unit.
Note: This metric is not available for all search and ad intents formats.