Substitutes for Wheat Flour 1 cup GFCF

I thought that I would do a series on substitutes for the GFCF diet. So here are the substitutes for one cup of wheat flour.

Buckwheat Flour use 7/8 cup for one cup of wheat flour
Corn Flour use 1 cup
Cornmeal,Cornstarch use 3/4 cup (105g corn meal 98g corn starch)
Chickpea Flour use 3/4 cup for one cup of wheat flour
Nut Flours (ground finely) use 1/2 cup for one cup of wheat flour
Potato Flour use 1 cup
Potato Starch use 3/4 cup for one cup of wheat flour
Rice flour, sorghum use 7/8 cup (140g rice 125g sorghum)
Tapioca flour or starch use 1 cup (120g)