Food weight and portion guide

Dry rolled oats: calories and portions

USDA reference data379kcal per 100 grams

Cereals, oats, regular and quick, not fortified, dry

These values describe dry oats before adding milk or water, not the finished bowl of porridge.

Calculate your portion

Enter 0.1–5,000 g. Exclude inedible skin, stones and bones.

for 40 g:

Calories
151.6 kcal
Protein
5.3 g
Carbohydrate
27.1 g
Fat
2.6 g

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Nutrition by weight

Cereals, oats, regular and quick, not fortified, dry
WeightCaloriesProteinCarbohydrateFat
40 g151.65.3 g27.1 g2.6 g
80 g303.210.5 g54.2 g5.2 g
100 g37913.2 g67.7 g6.5 g

Values are scaled from the per-100-g data and rounded. “Calories” means kilocalories (kcal).

Tips for weighing and logging

Weigh dry oats, milk and toppings separately. Do not use the finished bowl weight as the dry oat weight.

To calculate manually, multiply your portion weight in grams by 379 and divide by 100. For example, 40 g provides approximately 151.6 kcal.

When logging a photo, check the food, cooking method and estimated portion before saving. A photograph cannot reliably show hidden oil or exact weight.

Sources and calculation method

The record below provides values per 100 g of edible food. One reference variety or brand does not represent every product.Library method and limitations

  1. USDA FoodData Central — SR Legacy — Cereals, oats, regular and quick, not fortified, dry · FDC ID: 173904 · SR Legacy Collection, April 2018

Data review and calculation: October 2, 2026. Author: Avocado editorial team. This guide supports food logging; it does not replace personalised advice from a registered dietitian.

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