What Is View-Through Conversion (VTC)?
A view-through conversion is a conversion counted when a user saw your ad (an impression, not a click) and then converted within the platform's view attribution window (typically 1 day). Platforms count them because view-through captures upper-funnel influence that last-click misses; critics count them warily because a rendered impression is a very weak signal that the ad actually caused the sale.
The view-through trap
A brand runs a $20,000 retargeting campaign on Meta. Reported ROAS with 7-day-click + 1-day-view: 6.8x. Reported ROAS with 7-day-click only: 3.2x. A geo holdout run the same quarter shows incremental ROAS around 2.5x. Half of the reported 6.8x was view-through on users who were already going to buy. The campaign is still profitable, but not at the scale the reported number suggested.
Benchmarks
- Retargeting campaigns: view-through often accounts for 30 to 50 percent of reported conversions. Treat with heavy skepticism.
- Cold prospecting: view-through commonly adds 10 to 20 percent; more defensible because these users had no prior intent.
- YouTube in-stream: view-through (Engaged-View Conversions) is a first-class signal because a 10-second engaged view is stronger than a fleeting feed impression.
A Google study found view-through conversions inflate reported performance by 12-30% on average across YouTube and Display, with heaviest inflation on retargeting placements.
Why it matters
View-through is the biggest source of ROAS inflation on retargeting and Advantage+ Shopping campaigns. Cutting spend without adjusting for view-through can crash real revenue; scaling based on view-through-inflated ROAS can burn budget. The rule of thumb: use click-only attribution as your decision metric, keep view-through as a directional secondary.
Common mistakes
- 1.Comparing view-through ROAS across Meta, Google and TikTok. Definitions differ; the comparison is meaningless.
- 2.Judging retargeting on view-through-included ROAS. That is where the inflation is worst.
- 3.Turning off view-through entirely on prospecting. You lose real upper-funnel signal.
- 4.Confusing view-through with brand lift. They measure different things.
Put View-Through Conversion to work
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FAQs about View-Through Conversion
Should I turn off view-through conversions?
No. Add a second column in Ads Manager for click-only ROAS and make that your primary decision metric; keep view-through visible as a secondary signal for prospecting.
How long is the view-through window?
1 day on Meta by default. Google YouTube allows up to 30 days for Engaged-View Conversions. Longer windows inflate numbers more; shorter windows are closer to real influence.
Are view-through conversions real?
Some are, some are not. On cold prospecting they capture legitimate upper-funnel influence; on retargeting they mostly capture people who were already going to buy. Incrementality tests are the only way to know for sure.
Does Google Ads count view-through?
Yes, mostly on the Display Network and YouTube. Search does not have view-through in the same sense because impressions on a search page are already high-intent.
Go deeper
Long-form reads that show View-Through Conversion applied end to end.
Related terms
How credit for a conversion is assigned across ad touchpoints.
How long after a click or view Meta can still credit a conversion.
Measures the lift ads caused vs what would have happened anyway.
Revenue attributed to ads ÷ ad spend, the fastest efficiency read.
Total revenue ÷ total ad spend, the blended, attribution-free ROAS.
Incrementality test that turns spend on/off by region to isolate impact.
Google's ML model that distributes credit based on observed conversion paths.