Calories in 1/4 Cup of Raw Onions
1/4 cup of raw onions (40 g) has 15 calories. That is 1% of a 2,000 calorie diet.
The calories come from 0.3 g of protein, 0 g of fat and 3.4 g of carbohydrates, a split of 9% protein, 2% fat and 89% carbs. For comparison, 1/2 cup of raw onions has 30 calories. Burning 15 calories takes about 3 minutes of brisk walking or 1 minute of running for a 155 lb adult, based on Harvard Health Publishing activity estimates.
Raw Onions Calorie Calculator
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Raw Onions calories by serving size
Common amounts of raw onions with calories and macros. Tap a row for its full nutrition page.
| Serving | Weight | Calories | Protein | Fat | Carbs |
|---|---|---|---|---|---|
| 1 ring | 5 g | 2 | 0 g | 0 g | 0.4 g |
| 2 rings | 10 g | 4 | 0.1 g | 0 g | 0.8 g |
| 1 slice | 15 g | 6 | 0.1 g | 0 g | 1.3 g |
| 2 slices | 30 g | 11 | 0.3 g | 0 g | 2.5 g |
| 1/4 cup | 40 g | 15 | 0.3 g | 0 g | 3.4 g |
| 50g | 50 g | 19 | 0.4 g | 0 g | 4.2 g |
| 1/2 cup | 80 g | 30 | 0.7 g | 0.1 g | 6.8 g |
| 100g | 100 g | 38 | 0.9 g | 0.1 g | 8.5 g |
| 4 oz | 113 g | 43 | 1 g | 0.1 g | 9.6 g |
| 1 raw onion | 148 g | 56 | 1.3 g | 0.1 g | 13 g |
| 1 cup | 160 g | 61 | 1.4 g | 0.1 g | 14 g |
| 200g | 200 g | 76 | 1.7 g | 0.2 g | 17 g |
| 2 raw onions | 296 g | 112 | 2.5 g | 0.2 g | 25 g |
Raw Onions vs similar foods
Calories per 100 g compared with other vegetables.
Raw Onions: common questions
How many calories are in 1/4 cup of raw onions?
1/4 cup of raw onions weighs about 40 g and has 15 calories.
How much protein is in 1/4 cup of raw onions?
1/4 cup of raw onions has 0.3 g of protein, which is 1% of the 50 g Daily Value.
How many carbs are in 1/4 cup of raw onions?
1/4 cup of raw onions has 3.4 g of carbohydrates, including 0.7 g of fiber and 2.3 g of sugars.
How much raw onions is 100 calories?
100 calories of raw onions is 263 g, about 2 raw onions.
More about raw onions
Amount for a target
Weights and conversions
Source: USDA FoodData Central, FNDDS 2021-2023. FDC ID 2709795. Original description: Onions, raw. Portion weights are USDA household measures.