Confusion between measurements of Flour.(volume/weight)
I've been baking breads and rolls for quite a while. My problem is most recipes are by volume, some by weight. Now when I go to convert, I get different measurements depending where I look or by what recipe. I started with 3 cups of flour and that could be anywhere from 13 oz flour from KAF to 15 oz of flour or more on other recipes. Jim Lehey uses 3 cups of flour for the no knead and gives no ozs but gives 400gr as 3 cups of flour. 400gr does not equal 15 ozs which should be about 3 cups. I do know volume can vary so would like to use weight but I do get inconsistencies as to how many ozs/grs 3 cups of flour should be about. If a recipe calls by volume, 3 c of flour, how many ozs should I use and why does this conversion vary from various sources? To me, baking is a science, therefore should be exact when converting. What is your opinion? Do you find conversions to be inconsistent?