1/2 Cup of Oatmeal in Grams

1/2 cup of oatmeal weighs 120 grams, or 4.2 oz.

This is the USDA household measure for oatmeal. That amount has 77 calories. Packing, chopping and moisture change how much fits in a cup, so a kitchen scale gives the most accurate count.

Oatmeal Calorie Calculator

AmountUnit

77cal

in 1/2 cup of oatmeal (120 g)

Protein2.7 g14% of calories

Fat1.3 g15% of calories

Carbs14 g71% of calories

4% of a 2,000 calorie day

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Oatmeal cups to grams

Amount	Grams	Ounces	Calories
1/4 cup	60 g	2.1 oz	38
1/3 cup	80 g	2.8 oz	51
1/2 cup	120 g	4.2 oz	77
2/3 cup	160 g	5.6 oz	102
3/4 cup	180 g	6.3 oz	115
1 cup	240 g	8.5 oz	154
1 1/2 cups	360 g	13 oz	230
2 cups	480 g	17 oz	307
3 cups	720 g	25 oz	461
4 cups	960 g	34 oz	614

Oatmeal calories by serving size

Common amounts of oatmeal with calories and macros. Tap a row for its full nutrition page.

Serving	Weight	Calories	Protein	Fat	Carbs
50g	50 g	32	1.1 g	0.5 g	5.7 g
100g	100 g	64	2.2 g	1.1 g	11 g
4 oz	113 g	73	2.5 g	1.2 g	13 g
1/2 cup	120 g	77	2.7 g	1.3 g	14 g
200g	200 g	128	4.4 g	2.2 g	23 g
1 cup	240 g	154	5.3 g	2.6 g	27 g

Oatmeal vs similar foods

Calories per 100 g compared with other grains, rice and pasta.

Oatmeal Made with Milk116

Maple Flavored Instant Oatmeal102

Fruit Flavored Instant Oatmeal100

Reduced Sugar Oatmeal85

Instant Oatmeal68

Oatmeal64

Multigrain Oatmeal56

Oatmeal: common questions

How many grams are in 1/2 cup of oatmeal?

1/2 cup of oatmeal is about 120 g.

How many calories are in 1/2 cup of oatmeal?

1/2 cup of oatmeal has 77 calories.

How many cups is 100 g of oatmeal?

100 g of oatmeal is about 1/2 cup.

More about oatmeal

Source: USDA FoodData Central, FNDDS 2021-2023. FDC ID No added fat: 2708381. Original description: Oatmeal, regular or quick, made with water, no added fat. Portion weights are USDA household measures.