3 Answers

You can't convert it to grams.

The "fluid ounce" unit was horrible idea. Just because an ounce of water takes up a fluid ounce doesn't mean it's the same for other ingredients.

Yh

You wanted cups in 145g of H2O sorry I did math wrong.  right answer .61cups in 145g of H2O   28.35 g in 1 oz x 16 oz x 8.33specific wt of H2O=3778.49g in 1 gal divided 128 oz in gal=29.52x8 oz in cup=236.16g in 1 cup divide 145 by 236.16= .61 cups in 145 g of H2O

2236.16g 28.35g in ounce x16 oz in a lb x 8.33 specific wt of H2O =3378.49 g in 1 gal Divide by 128 oz in 1 gal= 29.52 x 8oz in 1 cup= 236.16. Need to weigh because 80z in 1cup is fl measure not dry measure. I dont have a scale. Youwanted  cups in 145g. SAme math divide 145 by 236.16= .61 cups in 145g of H2).