Your ad can show to a potential customers when your targeted language matches:

Your ad can show to a potential customers when your targeted language matches the customer’s Google interface language setting, which serves as the primary signal Google uses to determine user language preference. Mechanically, when a user selects a specific language for their Google account or search interface, it provides a definitive indicator of their linguistic capabilities. Google Ads leverages this data to align your campaign's targeted language with the user's active settings, guaranteeing that your advertisements are displayed to an audience that can effectively engage with your content. This system is designed to maximize relevance and minimize accidental clicks from users who may not comprehend the ad's call to action. By focusing on the customer’s Google interface language setting, Google creates a more seamless user experience where ads feel native to the browsing environment. For advertisers, this means higher click-through rates and better quality scores, as the targeted language precisely mirrors the user's chosen interface environment.