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Vegetables and starchy roots

Green beans

Green beans are 90% water, so 100 g (3.5 oz) brings only 31 kcal and 2.7 g of fiber.

USDA description: Green beans, raw

  • Easy to digest
  • Low energy density
  • Hydrating

Estimated satietyHow it is calculated

Starting point+1
Very low energy density+2
Moderate protein per calorie+1
A lot of fiber per calorie+2
High water content+1
Sum7
Capped at 55

Our own estimate from the values per 100 g: useful for comparing foods with each other, not a measurement in people. Holt index (1995): this food was not measured.

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Last updated
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Sources
5 primary
Data
USDA FDC 169961

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Nutrition facts

Calories
47 kcal per serving
31 kcal per 100 g (3.5 oz)
Protein
2.7 g per serving
1.8 g per 100 g (3.5 oz)
Carbohydrates
10.5 g per serving
7 g per 100 g (3.5 oz)
of which sugars
4.9 g per serving
3.3 g per 100 g (3.5 oz)
Fiber
4.1 g per serving
2.7 g per 100 g (3.5 oz)
Fat
0.3 g per serving
0.2 g per 100 g (3.5 oz)
of which saturated
0.1 g per serving
0.1 g per 100 g (3.5 oz)
Water
135.5 g per serving
90.3 g per 100 g (3.5 oz)

Source: USDA FoodData Central: Beans, snap, green, raw (FDC ID 169961), accessed September 23, 2026.

A typical 150 g (5.5 oz, about 1 1/2 cups) serving provides about 47 kcal, 2.7 g of protein, and 4.1 g of fiber.

The typical serving (150 g (5.5 oz, about 1 1/2 cups)) is a common amount used for the math, not a recommendation. Ounces and cups are rounded US equivalents; the values come from the database entry cited in the sources.

What it is and how to eat it

Green beans are the tender pods of the common bean plant (Phaseolus vulgaris), eaten whole before the seeds mature. They are called judías verdes in Spain, ejotes in Mexico and Central America, chauchas in Argentina and Uruguay, vainitas in Peru and Venezuela, habichuelas in Colombia and porotos verdes in Chile, and are sold fresh, frozen or canned, flat or round. This page covers raw green beans according to USDA, with 31 kcal and 2.7 g of fiber per 100 g; boiled and drained, they have 35 kcal and 3.2 g of fiber.

A 150 g (5.3 oz) serving provides about 47 kcal, 2.7 g of protein and about 4 g of fiber: a lot of volume for very few calories, to go alongside the protein part of the plate, as in the roast pork loin with sweet potato and green beans or the tofu with peanut sauce and vegetables. The 2025 nutrition advisory on GLP-1 therapy suggests starting meals with protein, so if you eat little, leave the side dish for later. The same advisory suggests avoiding high-fiber foods in the first few days of treatment and, for constipation, increasing fiber gradually; in those days, and after a dose increase, half a serving cooked until soft may sit better.

What the evidence says

Raw, they have 2.7 g of fiber per 100 g, just below the 3 g for a "source of fibre" claim, but boiled and drained they reach 3.2 g and meet that minimum, and in both cases they far exceed the EU's other criterion for a "high fibre" claim, 3 g per 100 kcal, with 8.7 g and 9.1 g per 100 kcal (Regulation (EC) No 1924/2006). At 31 kcal per 100 g they have a very low energy density, meaning few calories per bite, mainly because 90% of their weight is water. A systematic review carried out for the 2010 Dietary Guidelines for Americans, with support from the US Department of Agriculture, reviewed 17 studies in adults, 7 of them randomized trials, and concluded that there is strong and consistent evidence that diets relatively low in energy density help with weight loss and weight maintenance (Journal of the Academy of Nutrition and Dietetics, 2012). That conclusion is about the diet as a whole, not a single food, and I have not found trials showing that green beans themselves help with weight loss.

The sources for this section are listed under "Sources" at the end of the page.

Recipes with this food

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Satiety

The 1 to 5 score is our own estimate: it starts at 1 point, adds points for low energy density, for protein and fiber per 100 kcal, and for the water in solid foods, and subtracts points for drinks with calories. It is useful for comparing foods with each other; it is not a measurement in people.

What to keep in mind on a GLP-1 medication

Easy to digest
It is a soft or low-fat food that many people tolerate well when they feel nauseous or get full quickly. This is an editorial judgment based on common patient guidance, not a measurement: everyone tolerates foods differently.
Low energy density
It has 100 kcal or less per 100 g: plenty of volume for few calories, which helps you feel full. On a GLP-1 medication, which already reduces your appetite, make sure these foods do not push protein foods off your plate.
Hydrating
It has 85 g of water or more per 100 g, so it contributes to hydration. That helps because with a smaller appetite people also tend to eat and drink less, and not drinking enough can make constipation worse.

Frequently asked questions about green beans

How many grams of protein are in a 150 g (5.5 oz) serving of green beans?

100 g (3.5 oz) of green beans has 1.8 g of protein. A typical 150 g (5.5 oz) serving has about 2.7 g of protein. That is 5.9 g of protein per 100 kcal.

How many kcal are in a 150 g (5.5 oz) serving of green beans?

100 g (3.5 oz) of green beans has 31 kcal. A typical 150 g (5.5 oz) serving has about 47 kcal. That is a very low energy density.

How much fiber is in a 150 g (5.5 oz) serving of green beans?

100 g (3.5 oz) of green beans has 2.7 g of fiber. A typical 150 g (5.5 oz) serving has about 4.1 g of fiber.

Do green beans keep you full?

Yes, very filling for the calories they provide: our estimated satiety score is 5 out of 5. It is based on: very low energy density; moderate protein per calorie; a lot of fiber per calorie; high water content. It is an estimate based on its composition, not a measurement in people.

What should I know about green beans if I take Ozempic, Wegovy, Mounjaro, or Zepbound and feel nauseous?

Based on our tags, this is what matters about green beans on a GLP-1 medication. “Easy to digest”: a soft or low-fat food that many people tolerate well when they feel nauseous or get full quickly. “Low energy density”: plenty of volume for few calories; make sure it does not push protein foods off your plate. “Hydrating”: a lot of water, which contributes to hydration when you eat and drink less. These are general guidelines, not medical advice: everyone tolerates foods differently.

What is a typical serving of green beans?

We use 150 g (5.5 oz) as a typical serving, about 1 1/2 cups. That amount provides about 47 kcal, 2.7 g of protein, and 4.1 g of fiber. It is a reference for calculations, not a recommendation of how much to eat.

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Sources

Sources for the data on this page, with the access date.

  1. Official databaseU.S. Department of Agriculture, Agricultural Research Service.USDA FoodData Central: Beans, snap, green, raw (FDC ID 169961).accessed .
  2. Official databaseU.S. Department of Agriculture, Agricultural Research Service.USDA FoodData Central: Beans, snap, green, cooked, boiled, drained, without salt (FDC ID 169141).accessed .
  3. Clinical guidelineObesity (Wiley).Mozaffarian D, et al. Nutritional priorities to support GLP-1 therapy for obesity: A joint Advisory from the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association, and The Obesity Society. Obesity. 2025;33(8):1475-1503. doi:10.1002/oby.24336.accessed .
  4. RegulatorOfficial Journal of the European Union (EUR-Lex).Regulation (EC) No 1924/2006 on nutrition and health claims made on foods (Annex).accessed .
  5. Meta-analysisJournal of the Academy of Nutrition and Dietetics (Elsevier).Pérez-Escamilla R, Obbagy JE, Altman JM, et al. Dietary energy density and body weight in adults and children: a systematic review. J Acad Nutr Diet. 2012;112(5):671-684. doi:10.1016/j.jand.2012.01.020.accessed .