to reach the point that; to turn into
Describes a change or transition to a new state or habit, often after effort or time.
The pattern ようになる expresses a change in situation or behavior: something has come to be, or someone has reached the point where they do something. It often implies a gradual process or a transition from one state to another. For example, if you study Japanese, you might reach the point where you can read newspapers: that is 新聞が読めるようになる.
This pattern is used with verbs in their dictionary form, and it can apply to both positive and negative changes. It is commonly used with potential verbs (like できる, 見える, 話せる) to talk about abilities that develop over time, but it can also be used with other verbs to describe changes in habits or routines. For instance, 毎朝走るようになる means you have started running every morning.
Note that ようになる is about a change that has already taken place or will take place. When talking about a change that happened in the past, use ようになった. When talking about a future change, you can use ようになる or ようになるでしょう. The difference from ことになる is that ことになる means a decision or arrangement is made, while ようになる is about a natural or gradual change.