Healthy body weight

I feel good in my body I would like to at some point in my life have a flat stomach lol so I want to start working out. I'm just curious though as to what my "healthy body weight" is for my height and age??. I'm 26 and I'm 5'4 (I think 5ft 3 and 1/4 inch technicaly). But do yall have any idea or know how I can figure it out