Glossary
What are ad relevance diagnostics on Meta?
Melvin Salas1 min readVerified 10 October 2026
Short answer
Ad relevance diagnostics are three columns in Meta Ads Manager: quality ranking, engagement rate ranking and conversion rate ranking. Meta says they can help you diagnose whether the ads you ran were relevant to the audience you reached, and that they assess each ad's past performance in the ad auction over the date range you've selected.
Meta defines each one against a comparison set. Quality ranking is how your ad's perceived quality compared to ads competing for the same audience. Engagement rate ranking is how your ad's expected engagement rate compared to ads competing for the same audience. Conversion rate ranking is how your ad's expected conversion rate compared to ads with the same optimisation goal competing for the same audience.
Two limits are Meta's. Ad relevance diagnostics aren't available for ads with fewer than 500 impressions, and they aren't inputs into the ad auction. They are default columns in the Performance column preset, but must be added manually to custom column presets.
Our reading, not Meta's: each ranking compares your ad with other ads competing for the same audience, so it is a diagnosis to read beside your cost per result, not a replacement for it. And because an ad under 500 impressions gets no ranking at all, an ad set split across many ads can leave most of them with nothing to read.
We run Meta and Google as one system
Riibon runs Meta Ads and Google Ads together, so one platform does not quietly claim the demand the other one built, and ties both back to outcomes measured outside the platforms.
Ask the Riibon app how your Meta and Google campaigns compare on the same terms. It is free, with no time limit and no card. Or book a call and we run it for you.