Calories in Flour: Nutritional facts for Flour Types

One hundred grams (3.5 oz) of all-purpose white flour contains 364 calories. One hundred grams of whole wheat flour provides 340 calories. One hundred grams of almond flour contains 571 calories. One hundred grams of spelt flour has 338 calories. One hundred grams of oat flour contains 400 calories. One hundred grams of cake flour has 360 calories. One hundred grams of bread flour provides 361 calories.

One kilogram (2.2 lbs) of all-purpose white flour contains 3640 calories. One kilogram of whole wheat flour provides 3400 calories. One kilogram of almond flour contains 5710 calories. One kilogram of spelt flour has 3380 calories. One kilogram of oat flour contains 4000 calories. One kilogram of cake flour has 3600 calories. One kilogram of bread flour provides 3610 calories.

A common 5 lb (2268 g) bag of Gold Medal All-Purpose Flour contains 8256 calories. A 5 lb (2268 g) bag of King Arthur Whole Wheat Flour provides 7711 calories. A 1 lb (454 g) bag of Bob's Red Mill Almond Flour contains 2592 calories.

The health benefits of flour vary significantly depending on the type of flour. Whole grain flours offer the most benefits due to retaining the bran, germ, and endosperm of the grain. Here are some key health benefits, primarily associated with whole grain and some alternative flours:

• Source of Dietary Fiber (Whole Grain Flours): Whole grain flours like whole wheat, spelt, rye, and oat flour are excellent sources of dietary fiber. Fiber aids digestion, promotes bowel regularity, helps manage blood sugar, and can lower cholesterol levels (Anderson JW, et al., 2009, "Health benefits of dietary fiber").
• Provides B Vitamins (Enriched and Whole Grain Flours): Many refined flours are enriched with B vitamins (thiamin, riboflavin, niacin, folic acid) to replace those lost during processing. Whole grain flours are naturally good sources of these B vitamins, which are crucial for energy metabolism and nervous system function.
• Contains Essential Minerals (Especially Whole Grain and Nut Flours): Whole grain flours supply important minerals such as manganese, magnesium, phosphorus, selenium, and iron. Nut flours like almond flour are particularly rich in minerals like magnesium, manganese, and calcium, as well as Vitamin E.
• Source of Plant-Based Protein: All flours contain protein, with amounts varying by type. Whole grain flours and nut flours contribute significantly to plant-based protein intake, which is important for muscle repair and overall bodily functions.
• May Support Heart Health (Whole Grains and Nut Flours): The fiber in whole grain flours can help reduce LDL ("bad") cholesterol. Nut flours, like almond flour, provide heart-healthy monounsaturated fats which also support cardiovascular health (Sabate J, et al., 2010, "Nut consumption and blood lipid levels: a systematic review and meta-analysis").
• Gluten-Free Options (Alternative Flours): Flours made from non-gluten grains or nuts (e.g., almond, coconut, oat (if certified gluten-free), rice, buckwheat, sorghum) provide essential alternatives for individuals with celiac disease or gluten sensitivity, allowing them to enjoy baked goods and other flour-based products.
• Provides Energy: Flours are primarily composed of carbohydrates, which are the body's main source of energy. Whole grain flours provide complex carbohydrates for sustained energy release.
• Contains Antioxidants (Whole Grains and Some Alternative Flours): Whole grains and some nut/seed flours contain various phytochemicals and antioxidants that help protect cells from damage. For example, oat flour contains avenanthramides, unique antioxidants with anti-inflammatory properties (Meydani M., 2009, "Potential health benefits of avenanthramides of oats").

The downsides of flour depend on the type of flour and individual health conditions, and these are listed below:

• Refined Flours Lack Nutrients and Fiber: Highly processed white flours (like all-purpose white flour) have had the bran and germ removed, stripping away most of their natural fiber, vitamins, and minerals. While often enriched with some B vitamins and iron, they still lack the full nutritional profile of whole grains and can lead to rapid blood sugar spikes.
• Gluten Content (Wheat, Rye, Barley, Spelt): Many common flours (wheat, rye, barley, spelt) contain gluten, which can cause serious health problems for individuals with celiac disease and digestive discomfort or other symptoms for those with non-celiac gluten sensitivity.
• High Calorie Density (Especially Nut Flours): Some flours, particularly nut flours like almond flour, are very calorie-dense due to their higher fat content. While these are healthy fats, portion control is important for calorie management.
• Potential for Blood Sugar Spikes (Refined Flours): Refined flours have a high glycemic index, meaning they can cause rapid increases in blood sugar and insulin levels, which over time can contribute to insulin resistance and type 2 diabetes if consumed excessively as part of an unhealthy dietary pattern.
• Anti-nutrients (Whole Grains): Whole grains contain phytic acid, which can bind to some minerals and reduce their absorption. This is generally not a concern for people eating a balanced diet, and methods like soaking or fermentation can reduce phytic acid.

Yes, whole grain flours (like 100% whole wheat, whole spelt, whole oat, or whole rye flour) are generally very good for you. They retain the bran, germ, and endosperm of the grain, providing substantial dietary fiber, B vitamins, minerals (like magnesium, manganese, and selenium), and beneficial phytochemicals. Consumption of whole grains is consistently linked to a reduced risk of chronic diseases, including heart disease, type 2 diabetes, and certain cancers. A review by an international group of researchers (Seal CJ, et al., 2006, "Whole Grains and Health: A Review of the Evidence") summarized the strong evidence supporting these benefits.

But  refined white flours (like all-purpose white flour or cake flour) have most of these beneficial components removed during processing. While often enriched with certain B vitamins and iron, they lack the fiber and full spectrum of nutrients found in whole grains. Regular, high consumption of refined flour products can contribute to blood sugar spikes, weight gain, and an increased risk of chronic diseases. Alternative flours like almond flour or coconut flour offer different nutritional profiles and can be good choices, particularly for those avoiding gluten, but their calorie density should be considered.

The calorie content of flour varies considerably depending on its source and composition, primarily influenced by its fat, carbohydrate, and protein content per 100g. Nut-based flours, like almond flour, are the most calorie-dense, providing around 571 calories per 100g, due to their naturally high healthy fat content. Grain-based flours made from whole grains, such as whole oat flour (around 400 calories per 100g) or whole wheat flour (around 340 calories per 100g) and spelt flour (around 338 calories per 100g), have moderate calorie counts, reflecting their balance of carbohydrates, protein, and fiber.

Refined grain flours, like all-purpose white flour (around 364 calories per 100g), cake flour (around 360 calories per 100g), and bread flour (around 361 calories per 100g), have calorie levels similar to or slightly higher than some whole grain flours because the removal of lower-calorie bran and germ can concentrate the starchy endosperm. Flours derived from pseudocereals like buckwheat flour (around 335 calories per 100g) or legumes like chickpea flour (around 387 calories per 100g) also fall within a moderate calorie range. Coconut flour (around 400-450 calories per 100g) is also relatively high due to its fiber and some remaining fat content. Generally, the lowest calorie flours per 100g among common types would be some of the whole grain wheat or pseudocereal flours like whole spelt or buckwheat, while the highest are nut flours.

The origin of flour is linked to the dawn of agriculture and the cultivation of cereal grains, dating back at least 10,000-12,000 years to the Neolithic period in the Fertile Crescent. Early humans discovered that grinding wild grains like wheat and barley between stones (saddle stones or querns) produced a coarse powder, the first rudimentary flour. This flour could then be mixed with water to form a paste or dough, which could be cooked on hot stones or in embers to create simple flatbreads, or made into gruel. This ability to process grains into a more digestible and versatile foodstuff was a monumental step in human civilization, allowing for settled communities and population growth. Different grains became dominant in various regions: wheat and barley in the Middle East and Europe, rice in Asia, maize in the Americas, and sorghum/millet in Africa, each leading to distinct types of flour and culinary traditions.

A particularly interesting flour-based dish is Pasta. Legend often credits Marco Polo with bringing noodles back from China in the 13th century, but historical evidence suggests pasta was already present in Italy before then, possibly introduced by Arab traders to Sicily or evolving independently. Durum wheat, with its high protein and gluten content, proved ideal for making pasta that held its shape during cooking. From simple mixtures of flour and water (or eggs) rolled out and cut into various shapes, pasta became a staple food across Italy, with each region developing its own signature forms and sauces.