Boiled Onions Nutrition Facts

FoodData Central Updated 6 April 2026

One tablespoon of boiled onions contains 6.3 calories, 0.2g protein, 1.4g carbs, and 0g fat. Boiled Onions is a vegetable that is very low in calories.

6.3

cal

1.4g

carbs

0.2g

protein

amino acids ↓

0g

fat

0.2g

fiber

0.7g

sugar

Vitamins in Boiled Onions

Per Tbsp chopped ~15g

Vitamin C
0.78mg
<1%
Vitamin E
3mcg
<1%
Vitamin K
0.07mcg
<1%
Vitamin B6
0.02mg
1%
Niacin (B3)
0.03mg
<1%
Folate
2.25mcg
<1%

Minerals in Boiled Onions

Per Tbsp chopped ~15g

Calcium
3.3mg
<1%
Iron
0.04mg
<1%
Magnesium
1.65mg
<1%
Phosphorus
5.25mg
<1%
Potassium
24.9mg
<1%
Sodium
35.9mg
2%
Zinc
0.03mg
<1%
Selenium
0.09mcg
<1%
Copper
0.01mg
1%
Manganese
0.02mg
<1%

Amino Acids in Boiled Onions

Protein breakdown per tbsp chopped (15g), from the USDA record for this food.

Essential Amino Acids Per tbsp chopped (15g) Per 100g % of Protein
Histidine 3mg 22mg 1.6%
Isoleucine 7mg 48mg 3.5%
Leucine 7mg 48mg 3.5%
Lysine 10mg 65mg 4.8%
Methionine 2mg 11mg 0.8%
Phenylalanine 5mg 35mg 2.6%
Threonine 5mg 33mg 2.4%
Tryptophan 3mg 20mg 1.5%
Valine 5mg 31mg 2.3%
Other Amino Acids Per tbsp chopped (15g) Per 100g % of Protein
Alanine 6mg 38mg 2.8%
Arginine 27mg 183mg 13.5%
Aspartic Acid 11mg 74mg 5.4%
Cystine 4mg 24mg 1.8%
Glutamic Acid 33mg 220mg 16.2%
Glycine 9mg 57mg 4.2%
Proline 6mg 42mg 3.1%
Serine 6mg 40mg 2.9%
Tyrosine 5mg 34mg 2.5%

Protein quality is scored against the FAO/WHO/UNU 2007 adult indispensable amino acid reference pattern. The FDA publishes no Daily Values for individual amino acids, so the share of total protein is shown instead.

Learn More About Boiled Onions

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Verified Nutrition Data

Trusted & Verified Nutritional Information

All nutritional data on Food Index is sourced from official U.S. government databases and verified by nutrition experts at leading federal agencies.

USDA Official Source
FDA Safety Standards
HHS Health Standards
NIH Research Verified

Laboratory Analyzed

Nutrient values from certified lab analysis

Peer Reviewed

Data reviewed by nutrition scientists

Regularly Updated

Synced with latest official database releases

Nutritional values are based on standard reference data and may vary slightly based on preparation methods, brands, and natural variation in foods. Always consult with a healthcare professional for personalized dietary advice.