Onion Nutrition Facts

4 calories in 1 slice, thin

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Calories in Onion
Onions, raw
4 calories in Onion, 1 slice, thin
1 slice, thin = 9g ≈ 0.020lb ≈ 0.32oz
0.40 calories / gram
0 Weight Watchers points
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Calorie Sources:90% carbohydrates; 8% proteins; 2% fats
Fats:9 mg
Carbohydrates:0.84 g (3 calories, 9% by weight)
Proteins:99 mg
Alcohol:~
Water:8.02 g (89% by weight)
Fat Composition:67% saturated; 17% monounsaturated; 17% polyunsaturated
Trans Fat :~
Dietary Fiber:0.15 g (2% by weight)
Cholesterol:~
Caffeine:~
Serving Sizes: 100 g
1 cup, chopped
1 cup, sliced
1 tbsp chopped
1 large
1 slice, large (1/4" thick)
1 medium (2-1/2" dia)
1 slice, medium (1/8" thick)
1 small
1 slice, thin
10 rings
Scientific Name:Allium cepa
Refuse:10 %
Refuse Description:Stem ends, sprouts and defects
Food Group:Vegetables and Vegetable Products
USDA #:11282
Tags: onion; onions;
Related Foods: Calories in Onion Powder
Calories in Onion Rings
Calories in Scallion
Calories in Shallots
Calories in Sweet Onions
Calories in Welsh Onion
Calories in Yellow Onion
Vitamin A:0 IU
Retinol:~
Retinol Activity Equivalent:~
α-Carotene:~
β-Carotene:0.09 mcg
β-Cryptoxanthin:~
Lycopene:~
Lutein + Zeaxanthin:0.36 mcg
Vitamin B-1:3.60 mcg
Vitamin B-2:1.80 mcg
Vitamin B-3:9.90 mcg
Vitamin B-5:10.80 mcg
Vitamin B-6:10.80 mcg
Vitamin B-9:1.71 mcg
Food folate:1.71 mcg
Dietary Folate Equivalent:1.71 mcg
Folic acid:~
Vitamin B-12:~
Added Vitamin B-12:~
Choline:549 mcg
Vitamin C:666 mcg
Vitamin D:0
Vitamin D2 (ergocalciferol):~
Vitamin D3 (cholecalciferol):~
Vitamin D (D2 + D3):~
Vitamin E:1.80 mcg
Added α-Tocopherol:~
β-Tocopherol:~
δ-Tocopherol:~
γ-Tocopherol:~
Vitamin K:0.04 mcg
Calcium (Ca):2.07 mg
Copper (Cu):2.70 mcg
Fluoride (F):0.10 mcg
Iron (Fe):18.90 mcg
Magnesium (Mg):900 mcg
Manganese (Mn):10.80 mcg
Phosphorus (P):2.61 mg
Potassium (K):13.14 mg
Selenium (Se):0.04 mcg
Sodium (Na):360.00 mcg
Zinc (Zn):15.30 mcg
Cholesterol:~
Phytosterols:1.35 mg
Campesterol:~
Stigmasterol:~
β-sitosterol:~
Carbohydrates Total:0.84 g
Dietary Fiber:0.15 g
Sugars Total:0.38 g
Fructose:0.12 g
Galactose:~
Glucose/Dextrose:0.18 g
Lactose:~
Maltose:~
Sucrose:89.10 mg
Starch:~
Proteins Total:99 mg
Essential amino acids
Phenylalanine:1.80 mg
Leucine:1.80 mg
Methionine:180 mcg
Lysine:2.70 mg
Isoleucine:900 mcg
Valine:1.80 mg
Threonine:1.80 mg
Tryptophan:900 mcg
Histidine:900 mcg
Arginine:9 mg
Non-essential amino acids
Alanine:1.80 mg
Aspartic acid:8.10 mg
Betaine:9 mcg
Cystine:360 mcg
Glutamic acid:22.50 mg
Glycine:1.80 mg
Hydroxyproline:~
Proline:900 mcg
Serine:1.80 mg
Tyrosine:900 mcg
Fats Total:9 mg
Saturated fatty acids:3.60 mg
Monounsaturated fatty acids:900 mcg
Polyunsaturated fatty acids:900 mcg
Trans fatty acids:~
Trans-monoenoic:~
Trans-polyenoic:~
Saturated fatty acids
Butanoic/Butyric [4:0]:~
Hexanoic/Caproic [6:0]:~
Octanoic/Caprylic [8:0]:~
Decanoic/Capric [10:0]:~
Dodecanoic/Lauric [12:0]:~
Tridecanoic [13:0]:~
Tetradecanoic/Myristic [14:0]:360 mcg
Pentadecanoic [15:0]:~
Hexadecanoic/Palmitic [16:0]:2.70 mg
Heptadecanoic/Margaric [17:0]:~
Octadecanoic/Stearic [18:0]:360 mcg
Eicosanoic/Arachidic [20:0]:~
Docosanoic/Behenic [22:0]:~
Tetracosanoic/Lignoceric [24:0]:~
Monounsaturated fatty acids
Tetradecenoic/Myristoleic [14:1]:~
Pentadecenoic [15:1]:~
Hexadecenoic/Palmitoleic [16:1]:~
[16:1 cis]:~
[16:1 trans]:~
Heptadecenoic [17:1]:~
Octadecenoic/Oleic [18:1]:900 mcg
[18:1 cis]:~
[18:1 trans]:~
Eicosenoic/Gadoleic [20:1]:~
Docosenoic/Erucic [22:1]:~
[22:1 cis]:~
[22:1 trans]:~
Cis-Tetracosenoic/Nervonic [24:1 cis]:~
Polyunsaturated fatty acids
Octadecadienoic/Linoleic [18:2]:900 mcg
[18:2 CLAs]:~
[18:2 i]:~
[18:2 Ω-6 c,c]:~
[18:2 t,~]:~
[18:2 t,t]:~
Octadecatrienoic/Linolenic [18:3]:360 mcg
[18:3 Ω-3 c,c,c]:~
[18:3 Ω-6 c,c,c]:~
[18:3 i]:~
Octadecatetraenoic/Parinaric [18:4]:~
Eicosadienoic [20:2 Ω-6 c,c]:~
Eicosatrienoic [20:3]:~
[20:3 Ω-3]:~
[20:3 Ω-6]:~
Eicosatetraenoic/Arachidonic [20:4]:~
[20:4 Ω-6]:~
Eicosapentaenoic/Timnodonic [20:5 Ω-3]:~
Heneicosapentaenoic (HPA) [21:5]:~
Docosatetraenoic/Adrenic [22:4]:~
Docosapentaenoic/Clupanodonic [22:5 Ω-3]:~
Docosahexaenoic (DHA) [22:6 Ω-3]:~
Ash:31.50 mg
Caffeine:~
Theobromine:~
Product Type:Onion
Weight Watchers Points:0 point(s)
Atkins Diet (Induction) Rating:0 / 10
Atkins Diet (Maintanence) Rating:2 / 10
Zone Diet Rating:0 / 10
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Did you know?...More than 400,000 deaths in the U.S. each year are from smoking-related illnesses. Smoking greatly increases your risks for lung cancer and many other cancers.
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