Google Ad Manager: Forecasting & Sell-Through metrics now available

You can now forecast ad inventory performance directly in your reports with new Future Sell-Through
 and Availability Forecast
 report types for Google Ad Manager.
These updates help you move from reactive reporting to proactive inventory planning.
Future Sell-Through Report
Understand how your inventory is projected to perform before campaigns even run.
Track:
Forecasted impressions
Available impressions
Reserved impressions
Sell-through rate
This helps you evaluate inventory utilization, avoid overbooking, and identify revenue opportunities in advance.
Availability Forecast Report
Get daily forecasts of ad unit availability broken down by ad unit.
See:
Matched units
Available units
Possible units
You can filter forecasts by:
Device category (Desktop, Smartphone, Tablet, Connected TV)
Creative size (33 predefined sizes, e.g. 300x250, 728x90)
Priority level (0–16)
Note: Availability Forecast requires selecting a future date range.
More granular ad unit breakdowns
You can now break down the Ad unit dimension by child level by selecting “All levels (child ad units)”, giving you deeper visibility into inventory performance across your hierarchy.
Why this matters
Plan campaigns with greater confidence
Identify unsold inventory before it impacts revenue
Assess future availability directly in Whatagraph
Support sales and operations teams with forward-looking insights
Both new report types support future date ranges, so you can forecast and plan ahead without leaving your reporting workflow.
Try the new Google Ad Manager forecasting options in your reports and start planning smarter.
Google Ad Manager is available on Boost and Max Plans.