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Learn more about the new AdMob rewarded ads

Find an ad source's fill rate

Fill rate represents the number of times an ad was shown to users (impressions) compared to the number of times an ad was requested from a specific ad source (requests). The fill rate for each ad source is calculated using the following formula:

Impressions / Requests

 

Locating an ad source's fill rate

  1. Sign in to your AdMob account at https://apps.admob.com.
  2. Click Reports in the sidebar.
  3. Click the Ad Meditation report tab at the top of the page.
  4. Click the + add button in the Dimensions field and select Ad source.
  5. Scroll down to view the table at the bottom of the page. The fill rate will be shown for each of the ad sources listed.

Previous version of AdMob

Locating an ad source's fill rate

  1. Sign in to your AdMob account at https://apps.admob.com.
  2. Click the Monetize tab.
  3. Click the Ad Mediation report link in the sidebar.
  4. Click the + add button in the Dimensions field and select Ad source.
  5. Scroll down to view the table at the bottom of the page. The fill rate will be shown for each of the ad sources listed.

Why is the number of impressions often lower than requests?

When an ad request is triggered in your app, the request is sent to the first ad source available. Based on your app's mediation settings, several requests may be sent to different ad sources in the mediation chain before the request can be filled with an appropriate ad. This will generate requests for each of the ad sources, but an impression will only be reported for the ad source that fills the request.

Additionally, the number of impressions may be lower if your app preloads ads. For example, if an app sends an ad request when it opens, but only shows that ad to users if certain criteria are met, such as reaching a specified level. If a user doesn't meet the criteria, the ad will not be shown and will report no impressions for that request.

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