You are 5'9 what should the inseam on my pants be?

I believe the inseam is one half your height barefoot, that should fit perfectly depending on how long you prefer the pants, its the measurement from crotch to hem of pants. Every person is different so the best thing to do is take a pair of pants that are the length that you like and measure the seam on the inside of the leg, as indicated previously, from the crotch all the way down to the bottom of the hem.