Checked Oct 23, 2026. King Arthur lists 1 cup of all-purpose flour as 120 g. 100 g ÷ 120 g = 0.833 cup, which this converter shows as 0.833 cups and rounds to the nearest kitchen measure, 7/8 cup.
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Irish-Style Flour: grams per cup
King Arthur Baking lists 1 cup of irish-style flour at 110 g, which works out to 110 g per US cup, 6.9 g per tablespoon and 2.29 g per teaspoon. So 100 g of irish-style flour is about 7/8 cup (0.91 cups).
Flour weight depends heavily on how the cup is filled: spooning flour into the cup and levelling it gives a lighter cup than scooping straight from the bag.
Grams to cups chart
Grams
Kitchen measure
Cups (decimal)
Tablespoons
25 g
1/4 cup
0.227
3.6
50 g
1/2 cup
0.455
7.3
100 g
7/8 cup
0.909
14.5
125 g
1 1/8 cup
1.136
18.2
150 g
1 3/8 cup
1.364
21.8
200 g
1 7/8 cup
1.818
29.1
250 g
2 1/4 cup
2.273
36.4
300 g
2 3/4 cup
2.727
43.6
400 g
3 5/8 cup
3.636
58.2
500 g
4 1/2 cup
4.545
72.7
1000 g
9 1/8 cup
9.091
145.5
Cups to grams
Volume
Grams
Ounces
1/4 cup
28 g
0.97 oz
1/3 cup
37 g
1.29 oz
1/2 cup
55 g
1.94 oz
2/3 cup
73 g
2.59 oz
3/4 cup
82 g
2.91 oz
1 cup
110 g
3.88 oz
1 tablespoon
7 g
0.24 oz
1 teaspoon
2 g
0.08 oz
Source: King Arthur Baking, Ingredient Weight Chart. Kitchen measures are rounded to the nearest common cup fraction.
