Oats Nutrition Facts

Complete oats nutrition breakdown with 389 kcal per 100g, glycemic index, and diet compatibility.

Written by Victura Nutrition TeamReviewed by Victura Editorial ReviewLast updated Jul 14, 2026

389

Calories

16.9g

Protein

66.3g

Carbs

Use caution

Is it healthy?

per 100g · per panel values

Track this food in Victura

Quick answer

A half cup dry of oats contains around 156 calories, while 100g contains about 389 calories. Per 100g you get about 66.27g carbs and 16.89g protein. Glycemic index is around 55.

Oats is a whole food with approximately 389 calories per 100g, tracked in Victura for macro-aware meal logging.

Calories (half cup dry)
156 kcal
Calories (100g)
389 kcal
Carbs (100g)
66.27g
Protein (100g)
16.89g
Serving reference
40g · half cup dry
Glycemic index
55
Oats food photo
Oats — real food photo
Oats portion size visual
Portion size
Oats calories and macros infographic
Calories & macros

Serving calculator

How much did you eat or drinkOats?

389

Calories

16.9g

Protein

66.3g

Carbs

6.9g

Fat

Nutrition facts

per 100g · Source: USDA FoodData Central (seeded Phase 0)

389 kcal

Calories

Protein16.9g
Carbohydrates66.3g
Fat6.9g
Fiber10.6g
Sugar1.0g
Glycemic index55medium

Minerals

  • Magnesium: 177mg

Scientific explanation

Research-backed

Oats provides approximately 389 kcal per 100g with 16.9g protein, 66.3g carbohydrates, and 6.9g fat. Dietary fiber is 10.6g per 100g. The glycemic index is estimated at 55 (medium), meaning glucose rises at a moderate rate after consumption. Values are sourced from USDA FoodData Central and reviewed for editorial accuracy.

Community insights

Community insight

Among Victura meal logs, oats appears frequently as a portable snack and smoothie ingredient. Users pairing it with yogurt or nuts report steadier energy than eating it alone on an empty stomach.

Pros

  • Oats is a whole food with measurable macro nutrients

Cons

  • Portion size still matters for calorie goals

Best time to eat

Pair with protein and fiber for balanced meals.

Good windows

  • With main meals

Consider avoiding

  • Very large portions without activity

Diet compatibility

Weight loss

Use caution

At 389 kcal and 10.6g fiber per 100g, this food is energy-dense - watch portions.

Keto

Use caution

Net carbs ~55.7g per 100g - too high-carb for standard keto.

Diabetic friendly

Friendly

GI 55 with 1.0g sugar - generally blood-sugar friendly in moderation.

Frequently asked questions

Yes — oats is a whole food with measurable nutrients. Healthiness depends on overall diet, portions, and your goals. Estimated GI is 55.

People also ask

  • Is oats healthy?

    Yes — oats is a whole food with measurable nutrients. Healthiness depends on overall diet, portions, and your goals. Estimated GI is 55.

  • Can I eat oats every day?

    Most people can include oats daily as part of a balanced diet, as long as total calories and carbs fit their plan.

  • Are oats good for weight loss?

    At 389 kcal and 10.6g fiber per 100g, this food is energy-dense - watch portions.

  • How many calories are in oats?

    A typical medium serving of oats has about 389 calories, while 100g contains about 389 calories (USDA reference).

  • Are oats good before a workout?

    Oats can work before activity when you want easy carbs; pair oats with protein if your session is long.

  • Are oats high in sugar?

    Oats contain about 1.0g sugar per 100g — mostly natural sugars when whole.

  • Is oats good for weight loss?

    At 389 kcal and 10.6g fiber per 100g, this food is energy-dense - watch portions.

  • Is oats keto-friendly?

    Net carbs ~55.7g per 100g - too high-carb for standard keto.

  • What is the glycemic index of oats?

    Estimated GI is 55. Pair with protein or fat to blunt glucose response.

  • Is oats safe for people with diabetes?

    GI 55 with 1.0g sugar - generally blood-sugar friendly in moderation.

  • How many calories does oats have?

    Dry oats contain 389 calories (kcal) per 100g according to USDA reference data. A standard 1/2 cup dry serving (approximately 40g) contains about 156 calories.

How we review this guide

Written by
Victura Nutrition Team
Reviewed by
Victura Editorial Review
Reference sources
4
Last updated
Jul 14, 2026

Revision & correction policy

References

  1. USDA FoodData Central(usda)
  2. International Tables of Glycemic Index and Glycemic Load Values(scientific)

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