why bread is uncountable

we use measurements in kilometers, kilograms, liters, pieces, sheets ....etc. see the examples given below. water - litres, distance - kilometres, sugar/fruits - kilograms, bread - loafs, paper - sheets. * give me sheet of paper, loaf of bread, kilo of apples ... etc. bread is also countable noun.

we use to measure things in kilometres, kilogrammes , loafs... etc. look the examples below water-litres distance- kilometres rice- kilogrammes flour- kilogrammes please give me 1kg of rice flour, a sheet of paper,loaf of bread so it is a countable noun.