How many carbs are in green beans?
One cup of cooked green beans (125g) has about 10g of carbohydrate and 6g of net carbs. They are among the lowest-carb cooked vegetables you can serve as a side.
Carbs by portion
| Portion | Total carbs | Fiber | Net carbs |
|---|---|---|---|
| 1 cup cooked (125g) | 9.8g | 4.0g | 5.8g |
| 100 grams | 7.9g | 3.2g | 4.7g |
Net carbs
One cup of cooked green beans has about 6g of net carbs, which is total carbs (10g) minus fiber (4g). The fiber-to-carb ratio is high compared with most vegetables. See the net carbs guide for how fiber affects your carb count.
For diabetes
A cup of cooked green beans is about 10g of total carbs, which is less than one carb exchange. The GI of 32 means a very flat blood sugar response. Most people with diabetes can eat a generous serving of green beans without it being the limiting factor in a meal. The carbs to watch are the ones in the same meal, like potatoes or bread, not the green beans. See the diabetes carb-counting guide.
Keto and low carb
One cup of cooked green beans has about 6g of net carbs, which is low enough to fit easily into a keto day. Green beans are one of the more practical hot vegetable sides for keto meals. Two cups would be 12g of net carbs, still within a 20 to 30g daily budget.
Good to know
Canned green beans have slightly higher sodium than fresh or frozen but the same carb count. Green bean casserole is a different matter: a typical serving adds condensed mushroom soup, fried onions, and milk, pushing carbs to 20g or more per half-cup. Fresh green beans eaten raw have the same carb count as cooked but a slightly lower GI because the cell walls are intact.
Full nutrition (per 100g)
- Calories: 35.0 kcal
- Carbohydrate: 7.88g
- Fiber: 3.2g
- Sugars: 3.63g
- Protein: 1.89g
- Fat: 0.28g
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Get the appFrequently asked questions
How many carbs are in green beans?
One cup of cooked green beans (125g) has about 10g of carbohydrate and 4g of fiber, for 6g of net carbs.
Are green beans low carb?
Yes. One cup of cooked green beans has only 6g of net carbs, making them one of the better vegetable options for low-carb diets.
Are green beans keto?
Yes. One cup has about 6g of net carbs, which fits comfortably within a 20 to 30g daily keto budget.
Are green beans OK for diabetics?
Yes. Green beans have a GI of 32 and only 10g of total carbs per cup. They cause a minimal blood sugar response and are a good default vegetable side.
Do canned green beans have more carbs than fresh?
No, the carb count is about the same. Canned green beans are higher in sodium, but the total carbohydrate per cup is similar to fresh or frozen cooked green beans.