USDA-sourced food nutrition

Raw Onion calories and macros

USDA reference nutrition for raw onion, shown per 100 g and for 1 cup, chopped (160 g). Match the stated preparation when comparing portions.

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Per 100 g

Calories40per 100 g
Protein1.1 gper 100 g
Carbohydrate9.3 gper 100 g
Fat0.1 gper 100 g

1 cup, chopped

Calories64per 160 g
Protein1.8 gper 160 g
Carbohydrate14.9 gper 160 g
Fat0.2 gper 160 g

Serving values are calculated from the USDA per-100 g record and rounded for display: nutrient value × 160 ÷ 100.

Using this food reference

The onion values describe raw onion. The chopped-cup comparison belongs to this raw record and is different from a medium-onion or thin-slice household measure.

Cooking can change water content, while frying adds a separate fat source. Use an appropriate cooked record or recipe calculation instead of assuming cooked onion weighs and measures like raw onion.

Match the food before using the numbers

The selected USDA description is Onions, raw. Preparation, water loss, added oil, salt, edible skin, product formulation, and measured portion can change the nutrition of the food you actually eat.

Source record

These values are informational estimates from a reference food record. They are not medical advice and may not match a particular recipe, package, or serving.

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