I am 6 foot 6 inches and have used hammocks for camping in the past. But they have all been too small for me. I cant stretch out flat, my legs end up being bowed and uncomfortable.

I am looking to build a hammock that I can sleep more diagonal in, but would like to know if anyone has worked out a fabric dimension calculator/spread sheet. I want to know what size piece of fabric I will need in order to make a hammock large enough for me.