Cup & Gram

400 Grams to Cups

400 grams is 3 ⅓ cups of all-purpose flour, 2 cups of granulated sugar, or 1 ¾ cups of butter — grams measure weight, cups measure volume, so the answer always depends on the ingredient's density. Find yours in the table below; every density is verified against King Arthur and USDA data.

400 g is also 14.1 oz by weight. For water and thin liquids, 400 g is simply 400 ml.

400 grams to cups, by ingredient

400 g in US cups (2026-08-20 verified densities)
IngredientCupsDecimalMeasure it as
all-purpose flour 3 ⅓ cups 3.33 3 cups + 5 tbsp
granulated sugar 2 cups 2 2 cups
powdered sugar 3 ⅓ cups 3.33 3 cups + 5 tbsp
brown sugar (packed) 1 ⅞ cups 1.88 1 cup + 14 tbsp
honey 1 ⅛ cups 1.18 1 cup + 3 tbsp
butter 1 ¾ cups 1.76 1 cup + 12 tbsp
milk (whole) 1 ⅝ cups 1.63 1 cup + 10 tbsp
uncooked white rice 2 ⅛ cups 2.16 2 cups + 3 tbsp
rolled oats 4 ½ cups 4.49 4 cups + 8 tbsp
chocolate chips 2 ⅓ cups 2.35 2 cups + 6 tbsp
cocoa powder 4 ¾ cups 4.76 4 cups + 12 tbsp
water 1 ⅔ cups 1.67 1 cup + 11 tbsp

Why the ingredient changes the answer

A US cup is a fixed volume (about 237 ml), but a cup of flour weighs 120 g while a cup of honey weighs 340 g — density is the whole game. That's also why there's no single "grams to cups" conversion factor, and why our converter asks for the ingredient first.

Convert another amount

250 g All-purpose flour = 2 ⅛ cups

Exactly 2.08 cups — or measure 2 cups + 1 tbsp.

Nearby amounts

Ingredient-specific charts: flour · sugar · butter · all ingredients · Reverse: cups to grams

Data verified 2026-08-20 · Methodology & sources