enough brooder space?

[animallover505]

I am turning part of my screened porch into a brooder. It is about 6 ft. by 8 ft., maybe a bit bigger. How long will it be until my 40 chicks outgrow it?

 

[Judy]

4 weeks, according to a chart I once found here:

up to 2 weeks: 0.5 sq ft per chick
2-4 weeks: 1 sq ft per chick
4-8 weeks: 2.5 sq ft per chick
over 8 weeks: 4 sq ft per chick

 

[animallover505]

ok, thanks! I can over double the size after that if I need to.