Generally speaking, dating describes a less serious level of commitment before either person is ready to describe the other as a girlfriend or boyfriend. You can only determine which term is appropriate by discussing it with the person you are seeing.

How long should you date someone before becoming their girlfriend?

As a rough rule, two months should be a safe amount of time to broach the subject. But every relationship is different, so if it feels right earlier, go for it. If it doesnt feel right at that stage, there are a few steps you can take to build yourself up for the conversation.