Below you find tables to help determine your character's basic physique.
Here you can find the height chart(s) for the species. Notice that "very short" and "very tall" are beyond average height scope. Feel free to push size beyond these measurements, if required. Heights are loosely based on the official DnD lore, rulebooks and other material, but might have been altered drastically.
Below you find the weight modifiers for the species to calculate the estimated weight. The numbers are based on DnD lore, rulebooks and other material, and edited for added variation and changed to something that resembles a BMI (wouldn't recommend using them as a health guide though). On the side, you have a calculator to figure out the weight.