Quick answer: King Arthur Baking lists 1/4 cup of chia seeds at 37 g, which works out to 148 g per US cup, 9.2 g per tablespoon and 3.08 g per teaspoon. So 100 g of chia seeds is about 2/3 cup (0.68 cups).
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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Chia seeds: grams per cup
King Arthur Baking lists 1/4 cup of chia seeds at 37 g, which works out to 148 g per US cup, 9.2 g per tablespoon and 3.08 g per teaspoon. So 100 g of chia seeds is about 2/3 cup (0.68 cups).
Cup measures are approximate for dry ingredients; for consistent results, weigh them.
Grams to cups chart
Grams
Kitchen measure
Cups (decimal)
Tablespoons
25 g
1/8 cup
0.169
2.7
50 g
1/3 cup
0.338
5.4
100 g
2/3 cup
0.676
10.8
125 g
7/8 cup
0.845
13.5
150 g
1 cup
1.014
16.2
200 g
1 1/3 cup
1.351
21.6
250 g
1 2/3 cup
1.689
27
300 g
2 cup
2.027
32.4
400 g
2 2/3 cup
2.703
43.2
500 g
3 3/8 cup
3.378
54.1
1000 g
6 3/4 cup
6.757
108.1
Cups to grams
Volume
Grams
Ounces
1/4 cup
37 g
1.31 oz
1/3 cup
49 g
1.74 oz
1/2 cup
74 g
2.61 oz
2/3 cup
99 g
3.48 oz
3/4 cup
111 g
3.92 oz
1 cup
148 g
5.22 oz
1 tablespoon
9 g
0.33 oz
1 teaspoon
3 g
0.11 oz
Source: King Arthur Baking, Ingredient Weight Chart. Kitchen measures are rounded to the nearest common cup fraction.
