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Grams of Rolled Oats to Cups

1 US cup of rolled oats weighs 90 grams (g), or 3.2 ounces (oz), so 100 grams of oats equals 1.11 cups. To convert grams of oats to cups, divide the grams by 90.

Oats trap air between the flakes, so a firmly packed cup can weigh several grams more than a loosely spooned one.

Rolled oats and old-fashioned oats are the same flattened whole oat flakes. 1 US cup of either weighs 90 g.

This page covers the rolled oats grams to cups calculator, a chart from 10 g to 1,000 g, 6 common gram amounts, a cups to grams chart, 4 measuring steps, and a comparison with 12 other grains.

1 cup
90 g
3.2 oz
½ cup
45 g
1.6 oz
1 tablespoon (tbsp)
5.6 g
1 tsp = 1.9 g
100 g
1.11 cups
1 cup + 2 tbsp

Rolled Oats Grams to Cups Calculator

Enter grams of rolled oats to get cups, tablespoons, milliliters (ml), ounces, and pounds. The calculator uses 90 g per US cup (236.6 ml).

Tip: Preset to rolled oats. Select another ingredient to compare.

g
Precision
Cup size 1 US cup = 236.6 ml
Rolled oats
1.11
US cups

100g = 1.11 cups (≈ 1 ⅛ cups)

17.78
Tablespoons
262.88
Millilitres
3.53
Ounces
0.22
Pounds
Formula 100 g ÷ 90 g/cup = 1.11 cups

Rolled Oats Grams to Cups Conversion Chart

The rolled oats grams to cups chart converts 24 amounts from 10 g to 1,000 g into cups, a cup measure with tablespoons, teaspoons (tsp), and ounces. The highlighted row equals 1 US cup.

Grams Cups Cup measure Tbsp Tsp Oz
10 g 0.11 2 tbsp 1.8 5.3 0.4
15 g 0.17 2.5 tbsp 2.7 8 0.5
20 g 0.22 ¼ cup 3.6 10.7 0.7
25 g 0.28 ¼ cup + 0.5 tbsp 4.4 13.3 0.9
30 g 0.33 ⅓ cup 5.3 16 1.1
50 g 0.56 ½ cup + 1 tbsp 8.9 26.7 1.8
60 g 0.67 ⅔ cup 10.7 32 2.1
75 g 0.83 ¾ cup + 1.5 tbsp 13.3 40 2.6
90 g 1 1 cup 16 48 3.2
100 g 1.11 1 cup + 2 tbsp 17.8 53.3 3.5
120 g 1.33 1 ⅓ cups 21.3 64 4.2
125 g 1.39 1 ⅓ cups + 1 tbsp 22.2 66.7 4.4
150 g 1.67 1 ⅔ cups 26.7 80 5.3
175 g 1.94 1 ¾ cups + 3 tbsp 31.1 93.3 6.2
200 g 2.22 2 ¼ cups 35.6 106.7 7.1
225 g 2.5 2 ½ cups 40 120 7.9
250 g 2.78 2 ¾ cups + 0.5 tbsp 44.4 133.3 8.8
300 g 3.33 3 ⅓ cups 53.3 160 10.6
350 g 3.89 3 ¾ cups + 2 tbsp 62.2 186.7 12.3
400 g 4.44 4 ⅓ cups + 2 tbsp 71.1 213.3 14.1
450 g 5 5 cups 80 240 15.9
500 g 5.56 5 ½ cups + 1 tbsp 88.9 266.7 17.6
750 g 8.33 8 ⅓ cups 133.3 400 26.5
1,000 g 11.11 11 cups + 2 tbsp 177.8 533.3 35.3

Values use US cups and the measuring method in the steps below. Cup measures round to the nearest ½ tablespoon.

How Many Cups Is 100, 200, 250, or 500 Grams of Oats?

6 common recipe amounts of rolled oats convert to cups as follows, with the cup and tablespoon measure for each.

Rolled Oats Cups to Grams Chart

The rolled oats cups to grams chart lists the weight of 13 US measures, from 1 teaspoon to 4 cups, in grams and ounces.

US measure Grams Ounces
1 teaspoon 1.9 g 0.1 oz
1 tablespoon 5.6 g 0.2 oz
⅛ cup 11.3 g 0.4 oz
¼ cup 22.5 g 0.8 oz
⅓ cup 30 g 1.1 oz
½ cup 45 g 1.6 oz
⅔ cup 60 g 2.1 oz
¾ cup 67.5 g 2.4 oz
1 cup 90 g 3.2 oz
1 ½ cups 135 g 4.8 oz
2 cups 180 g 6.3 oz
3 cups 270 g 9.5 oz
4 cups 360 g 12.7 oz

Convert any cup amount with the cups to grams converter.

How to Measure Rolled Oats Accurately

To measure rolled oats accurately, fill a dry measuring cup and level the top without shaking the cup. Shaking settles the pieces and adds weight.

  1. 1

    Fill a dry measuring cup

    Pour or spoon the rolled oats into a dry measuring cup or spoon until it overflows.

  2. 2

    Keep the cup still

    Do not tap or shake the cup. Shaking settles the pieces into the gaps and adds weight.

  3. 3

    Level the top

    Sweep a straight edge across the rim to remove the excess.

  4. 4

    Weigh it for an exact amount

    Set a bowl on a kitchen scale, press tare, and add rolled oats until the scale shows the gram amount in the recipe.

Rolled Oats vs Other Grains: Grams per Cup

The lightest of 13 grains is rolled oats at 90 g per cup. Swap grains by weight, not by cup, since the same cup holds a different number of grams.

Ingredient Grams per cup vs rolled oats 100 g in cups
Rolled oats 90 g — 1.11
Pasta (dry, small shapes) 105 g +15 g 0.95
Breadcrumbs (dry) 108 g +18 g 0.93
Cornmeal 155 g +65 g 0.65
Steel-cut oats 170 g +80 g 0.59
Quinoa (uncooked) 170 g +80 g 0.59
Basmati rice (raw) 180 g +90 g 0.56
White rice (raw) 185 g +95 g 0.54
Jasmine rice (raw) 185 g +95 g 0.54
Dry beans (raw) 185 g +95 g 0.54
Brown rice (raw) 190 g +100 g 0.53
Black beans (dry) 190 g +100 g 0.53
Lentils (dry) 192 g +102 g 0.52

Rolled Oats Grams to Cups FAQ

How many grams are in 1 cup of rolled oats?
1 US cup of rolled oats weighs 90 grams (3.2 oz). ½ cup weighs 45 g, and ¼ cup weighs 22.5 g.
How many cups is 100 grams of oats?
100 grams of rolled oats is 1.11 cups, or 1 cup + 2 tbsp with a standard measuring cup set. 100 g equals 17.8 tablespoons and 3.5 oz.
How many cups is 200 grams of oats?
200 grams of rolled oats is 2.22 cups, or 2 ¼ cups with a standard measuring cup set. 200 g equals 35.6 tablespoons and 7.1 oz.
How many cups is 250 grams of oats?
250 grams of rolled oats is 2.78 cups, or 2 ¾ cups + 0.5 tbsp with a standard measuring cup set. 250 g equals 44.4 tablespoons and 8.8 oz.
How many cups is 500 grams of oats?
500 grams of rolled oats is 5.56 cups, or 5 ½ cups + 1 tbsp with a standard measuring cup set. 500 g equals 88.9 tablespoons and 17.6 oz.
How many grams of rolled oats are in 1 tablespoon?
1 tablespoon of rolled oats weighs 5.6 g, and 1 teaspoon weighs 1.9 g. A US cup holds 16 tablespoons and 48 teaspoons.
What is 2 cups of rolled oats in grams?
2 cups of rolled oats is 180 grams (6.3 oz). 3 cups is 270 g, and 4 cups is 360 g.
Does 1 cup of rolled oats weigh the same as 1 cup of water?
No, 1 cup of rolled oats weighs 90 g and 1 cup of water weighs 236.6 g. A cup of rolled oats is 146.6 g lighter than a cup of water.
Are rolled oats the same as old-fashioned oats?
Yes, rolled oats and old-fashioned oats are the same flattened whole oat flakes. 1 US cup of either weighs 90 g.
Is it better to measure rolled oats in grams or cups?
Grams are more accurate for rolled oats. A kitchen scale reads the same weight every time, while a cup of rolled oats changes weight with packing, settling, and how the cup is filled.

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