How Much Does a Slice of Raw Onions Weigh?

A slice of raw onions weighs about 15 grams (0.5 oz).

That is the USDA average for one slice of raw onions, which has 6 calories and 0.1 g of protein. Sizes vary, so weigh yours if you track closely.

Raw Onions Calorie Calculator

AmountUnit

6cal

in 1 slice of raw onions (15 g)

Protein0.1 g9% of calories

Fat0 g2% of calories

Carbs1.3 g89% of calories

0% of a 2,000 calorie day

Add portions from any food page to build a meal total. It stays in this browser.

Measure	Grams	Ounces	Calories
1 raw onion	148 g	5.2 oz	56
1 slice of raw onions	15 g	0.5 oz	6
1 ring of raw onions	5 g	0.2 oz	2
1 cup of raw onions	160 g	5.6 oz	61

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
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

Calories per 100 g compared with other vegetables.

Raw Onions38

About 15 g, or 0.5 oz.

A slice of raw onions has 6 calories.

Source: USDA FoodData Central, FNDDS 2021-2023. FDC ID 2709795. Original description: Onions, raw. Portion weights are USDA household measures.