Is 4 inch normal for a 13 year old?

If you're referring to height, a 4-inch measurement would be unusually short for a 13-year-old, as most children in that age group are significantly taller. However, if you mean something else, such as shoe size or another measurement, it could be more context-dependent. It's important to consider growth patterns, genetics, and overall health. If there are concerns about growth or development, consulting a healthcare professional is advisable.