USDA reference food · Vegetables and Vegetable Products

Onions, spring or scallions (includes tops and bulb), raw

1 cup, chopped of onions, spring or scallions (includes tops and bulb), raw (100 g) has 30 calories, 2g of protein, 0g of fat and 3g of fiber (USDA FoodData Central, SR Legacy, FDC 170005). It is one of 14 USDA descriptions of onions.

FoodData Central 170005, SR Legacy, in the April 30, 2026 release; USDA record.

Nutrition Facts

Serving size1 cup, chopped (100g)

AmountPortion

Amount per serving

Calories30

% Daily Value*

Total Fat 0g0%

Saturated Fat 0g0%

Trans Fat 0g

Cholesterol 0mg0%

Sodium 15mg1%

Total Carbohydrate 7g3%

Dietary Fiber 3g9%

Total Sugars 2g

Includes Added Sugars not declared

Protein 2g4%

Vitamin D 0mcg0%

Calcium 70mg6%

Iron 1.5mg8%

Potassium 280mg6%

* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice. Protein % DV here is not corrected for protein quality.

USDA values per 100 g (SR Legacy), scaled to the portion. Check the USDA record.

Protein per 100 g: 1.8g; more than 22% of 8,218 USDA reference foods
Calories per 100 g: 32; more than 8% of reference foods
Fiber per 100 g: 2.6g; more than 76% of reference foods

What a portion gives you

Fiber 3g9%

Protein 2g4%

Potassium 280mg6%

Calcium 70mg6%

Iron 1.5mg8%

Sodium 15mg1%

Ticks: 5% of the Daily Value (FDA: low) and 20% (high)

Source: USDA FoodData Central, SR Legacy (FDC 170005); FDA Daily Values, 21 CFR 101.9.

Also rich in

Vitamin K207 µg in 1 cup, chopped (100 g), 173% of the Daily Value
Vitamin C19 mg in 1 cup, chopped (100 g), 21% of the Daily Value
Folate64 µg DFE in 1 cup, chopped (100 g), 16% of the Daily Value

Source: USDA FoodData Central (FDC 170005), every nutrient the record reports; FDA Daily Values, 21 CFR 101.9.

Where the calories come from: 76% carbohydrate, 4% fat and 19% protein (4 calories a gram of protein or carbohydrate, 9 of fat).

Where it sits among USDA reference foods

Per 100 g	This food	Share with less
Calories	32.0	8%
Protein	1.83 g	22%
Total fat	0.19 g	12%
Carbohydrate	7.34 g	49%
Fiber	2.60 g	76%
Total sugars	2.33 g	57%
Sodium	16.0 mg	21%

Source: USDA FoodData Central, SR Legacy and Foundation Foods: the 6,012 to 8,218 reference foods that report each value; the share of them with less per 100 g.

Every nutrient in this record (86)

The portion is 1 cup, chopped (100 g); % DV is for that portion.

Energy, macronutrients and sugars (14)

Nutrient	Per portion	Per 100 g	% DV
Protein	1.83 g	1.83 g	4%
Total lipid (fat)	0.19 g	0.19 g	0%
Carbohydrate, by difference	7.34 g	7.34 g	3%
Ash	0.81 g	0.81 g
Energy	32.0 kcal	32.0 kcal
Alcohol, ethyl	0 g	0 g
Water	89.8 g	89.8 g
Total Sugars	2.33 g	2.33 g
Fiber, total dietary	2.60 g	2.60 g	9%
Cholesterol	0 mg	0 mg	0%
Fatty acids, total trans	0 g	0 g
Fatty acids, total saturated	0.032 g	0.032 g	0%
Fatty acids, total monounsaturated	0.027 g	0.027 g
Fatty acids, total polyunsaturated	0.074 g	0.074 g

Minerals (10)

Nutrient	Per portion	Per 100 g	% DV
Calcium, Ca	72.0 mg	72.0 mg	6%
Iron, Fe	1.48 mg	1.48 mg	8%
Magnesium, Mg	20.0 mg	20.0 mg	5%
Phosphorus, P	37.0 mg	37.0 mg	3%
Potassium, K	276 mg	276 mg	6%
Sodium, Na	16.0 mg	16.0 mg	1%
Zinc, Zn	0.39 mg	0.39 mg	4%
Copper, Cu	0.083 mg	0.083 mg	9%
Manganese, Mn	0.16 mg	0.16 mg	7%
Selenium, Se	0.60 µg	0.60 µg	1%

Vitamins (24)

Nutrient	Per portion	Per 100 g	% DV
Retinol	0 µg	0 µg
Vitamin A, RAE	50.0 µg	50.0 µg	6%
Carotene, beta	598 µg	598 µg
Carotene, alpha	0 µg	0 µg
Vitamin E (alpha-tocopherol)	0.55 mg	0.55 mg	4%
Vitamin D (D2 + D3)	0 µg	0 µg	0%
Cryptoxanthin, beta	0 µg	0 µg
Lycopene	0 µg	0 µg
Lutein + zeaxanthin	1,137 µg	1,137 µg
Vitamin C, total ascorbic acid	18.8 mg	18.8 mg	21%
Thiamin	0.055 mg	0.055 mg	5%
Riboflavin	0.080 mg	0.080 mg	6%
Niacin	0.53 mg	0.53 mg	3%
Pantothenic acid	0.075 mg	0.075 mg
Vitamin B-6	0.061 mg	0.061 mg	4%
Folate, total	64.0 µg	64.0 µg
Vitamin B-12	0 µg	0 µg	0%
Choline, total	5.70 mg	5.70 mg	1%
Vitamin K (phylloquinone)	207 µg	207 µg	173%
Folic acid	0 µg	0 µg
Folate, food	64.0 µg	64.0 µg
Folate, DFE	64.0 µg	64.0 µg	16%
Vitamin E, added	0 mg	0 mg
Vitamin B-12, added	0 µg	0 µg

Amino acids (17)

Nutrient	Per portion	Per 100 g
Tryptophan	0.020 g	0.020 g
Threonine	0.072 g	0.072 g
Isoleucine	0.077 g	0.077 g
Leucine	0.11 g	0.11 g
Lysine	0.091 g	0.091 g
Methionine	0.020 g	0.020 g
Phenylalanine	0.059 g	0.059 g
Tyrosine	0.053 g	0.053 g
Valine	0.081 g	0.081 g
Arginine	0.13 g	0.13 g
Histidine	0.032 g	0.032 g
Alanine	0.082 g	0.082 g
Aspartic acid	0.17 g	0.17 g
Glutamic acid	0.38 g	0.38 g
Glycine	0.091 g	0.091 g
Proline	0.12 g	0.12 g
Serine	0.082 g	0.082 g

Fatty acids (19)

Nutrient	Per portion	Per 100 g
SFA 4:0	0 g	0 g
SFA 6:0	0 g	0 g
SFA 8:0	0 g	0 g
SFA 10:0	0 g	0 g
SFA 12:0	0 g	0 g
SFA 14:0	0.0010 g	0.0010 g
SFA 16:0	0.028 g	0.028 g
SFA 18:0	0.0030 g	0.0030 g
MUFA 18:1	0.027 g	0.027 g
PUFA 18:2	0.070 g	0.070 g
PUFA 18:3	0.0040 g	0.0040 g
PUFA 20:4	0 g	0 g
PUFA 22:6 n-3 (DHA)	0 g	0 g
MUFA 16:1	0 g	0 g
PUFA 18:4	0 g	0 g
MUFA 20:1	0 g	0 g
PUFA 20:5 n-3 (EPA)	0 g	0 g
MUFA 22:1	0 g	0 g
PUFA 22:5 n-3 (DPA)	0 g	0 g

Source: USDA FoodData Central, FDC 170005: every value the record reports, per 100 g as USDA gives it and scaled to the portion; Daily Values: 21 CFR 101.9.

Other ways to eat onions

USDA lists 14 preparations of onions. The onions page puts them side by side, per 100 g and per portion.

Compare every onions preparation

Next questions

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Sources for this page

USDA FoodData Central: this record and every record it is compared with, April 30, 2026 release. fdc.nal.usda.gov
FoodData Central documentation: what branded, SR Legacy, Foundation and survey records are. fdc.nal.usda.gov
USDA Food and Nutrient Database for Dietary Studies: survey foods and their household portions. ars.usda.gov
21 CFR 101.9, Nutrition labeling of food: the label format, its rounding and the Daily Values. ecfr.gov
21 CFR 101 subpart D, Nutrient content claims: the FDA thresholds the comparisons count. ecfr.gov
FDA, How to Understand and Use the Nutrition Facts Label: the 5% and 20% Daily Value rule. fda.gov