A view-through conversion is a sale, lead or other goal that an ad platform credits to an ad the person saw but did not click, because they converted within a set period after the ad was shown. It is the platform’s way of claiming some influence for ads that work by being seen rather than clicked.
How view-through conversions work
When an ad is served, the platform records the impression against the person, through a cookie, a logged-in account or both. If that person later converts on your site without having clicked any of your ads, and the conversion falls inside the view-through window, the platform counts a view-through conversion.
The windows differ by platform and campaign type, and they change over time, so check the settings in your own account. At the time of writing (October 2026):
- Google Ads reports view-through conversions mainly for Display, video and similar formats, with a default one-day window you can adjust in the conversion action’s settings. For Display they appear in their own column rather than the main Conversions column. YouTube has a related idea, engaged-view conversions, which require someone to have watched a meaningful part of the video.
- Meta includes view-through in its attribution setting. The common default is seven days after a click or one day after a view, and both are added together in the Results column unless you break them out.
Any click on an ad in the same platform normally takes priority, so a conversion is either click-through or view-through, not both. Across platforms there is no such rule. Google and Meta can each claim the same sale.
Why it matters
View-through credit can make a big difference to how a campaign looks. A Meta prospecting campaign for a UK homeware brand might show a healthy return, but if most of those purchases are one-day views from people who were already loyal customers and would have bought anyway, the true effect could be much smaller.
The counter-argument is real too. Video and display ads often work without clicks; someone sees an ad on their phone in the evening and searches for the brand the next morning. Ignoring view-through entirely undervalues those campaigns. The honest position is that view-through numbers show possible influence, not proven cause.
UK consent rules add another layer. Visitors who decline marketing cookies cannot be matched in the normal way, so platforms increasingly rely on modelled conversions, and view-through figures can include estimates rather than observed events.
Common mistakes
- Adding Google and Meta reported conversions together and comparing the total with actual orders.
- Judging a retargeting campaign on view-through results when it is shown mostly to people already heading to checkout.
- Leaving long view windows in place without knowing they are there.
- Switching off upper-funnel video because it records few click-through conversions, then seeing branded searches fall.
How to act on it
In Meta Ads Manager, break results down by attribution setting so you can see click and view conversions separately. In Google Ads, add the view-through column to Display and video reports and check the window on each conversion action.
Then compare platform figures with your own sales data. If reported conversions far exceed what your shop or CRM shows, view-through is often the gap. For larger budgets, a holdout or geographic test is the best way to see whether those impressions cause any incremental sales.
Setting attribution rules that reflect how your customers buy, rather than how the platform prefers to report, is part of the monthly Facebook and Instagram ads management I do for UK businesses.