Cornmeal brings a warm, rustic flavor to cornbread, polenta, and porridge, but the fat content can vary dramatically by type. Whole-grain cornmeal keeps the germ and delivers roughly 3.6 g of fat per 100 g, while degermed enriched varieties may contain less than half that. When you are tracking calories or macros, relying on a package’s serving size alone makes comparisons difficult.
This calculator converts the labeled fat figure into a standard fat-per-100g value, so you can compare products at a glance and calculate exactly how much fat is in the portion you actually eat. Enter the label serving weight and fat grams, choose a preset for common cornmeal types, and optionally enter your portion size to see the fat and calories from fat in that serving. It is designed for calorie counters, macro trackers, and anyone making more informed grain choices.
🌽 Cornmeal Fat Per 100g Calculator
Normalize any cornmeal nutrition label to fat per 100g and see what it means for your portion.
Enter your label values and press Calculate.
Quick Start
Open the nutrition facts panel on your cornmeal package. Note the serving size in grams (commonly 30–40 g of dry cornmeal) and the Total Fat per serving. Enter those two numbers into the calculator, add the weight of the portion you plan to eat if you want a custom result, and press Calculate. The tool immediately shows the fat-per-100g figure, the fat calories in 100 g, and the amount of fat in your portion. If you don't have a label handy, use the preset buttons for whole-grain, degermed enriched, or self-rising cornmeal; each loads a typical label value into the inputs.
Calculation Method
Nutrition labels express fat for a specific serving, which makes products hard to compare when serving sizes differ. Normalizing to 100 g solves that problem. The formula is simple:
Fat per 100 g = (Fat per serving ÷ Serving weight in g) × 100
Once you have the per-100g number, you can scale to any portion:
Fat in your portion = Fat per 100 g × Portion weight in g ÷ 100
Fat provides 9 calories per gram, so the fat calories per 100 g is simply fat per 100 g × 9. The Daily Value for total fat on a 2,000-calorie diet is 78 g, so the percent DV per 100 g is fat per 100 g ÷ 78 × 100.
Cornmeal Fat Reference Table
The table below shows typical total fat values for common dry cornmeal types, based on USDA FoodData Central entries. Actual values vary by brand and milling method.
| Cornmeal type | Approximate fat per 100 g | Typical label serving | Fat per typical serving |
|---|---|---|---|
| Whole-grain yellow/blue | 3.6 g | 30 g | 1.08 g |
| Degermed enriched | 1.8 g | 30 g | 0.54 g |
| Self-rising enriched | 2.7 g | 40 g | 1.08 g |
These figures are starting points. Always verify with the package, because stone-ground and whole-grain products can be slightly higher, and some low-fat degermed products are lower. You can search specific products in USDA FoodData Central.
Worked Examples
Example 1: Degermed cornmeal. A bag lists a serving of 30 g with 0.54 g fat. Fat per 100 g = (0.54 ÷ 30) × 100 = 1.80 g. If you use 60 g to make cornbread, the fat from the cornmeal alone is 1.80 × 60 ÷ 100 = 1.08 g.
Example 2: Whole-grain cornmeal. Your whole-grain cornmeal label says 35 g per serving and 1.26 g fat. Fat per 100 g = (1.26 ÷ 35) × 100 = 3.60 g. In a 120 g serving of cooked polenta that weighs 240 g (because of added water), fat per 100 g cooked is 3.60 × 120 ÷ 240 = 1.80 g. This shows why you should weigh the cooked form separately if you track prepared dishes.
Common Questions
Does stone-ground mean whole-grain? Usually yes: stone-ground cornmeal retains the germ, which contains most of the oil and therefore more fat. It also spoils faster than degermed cornmeal. If a product is described as degermed, the germ has been removed, reducing fat and some nutrients.
Is fat per 100 g the same as a percentage? Yes. Since 100 g is the reference weight, grams of fat per 100 g equals the fat percentage by weight. A result of 3.6 g/100 g means the cornmeal is 3.6% fat by weight. You can use the same normalization when comparing any grain or legume; for example, the lentil fat per 100g calculator uses the identical method.
Why does my cooked cornmeal have a much lower fat per 100 g? Because water is absorbed during cooking. The fat doesn't disappear; it is spread across more total weight. If you log the cooked dish, weigh the cooked porridge or polenta and use the as-cooked weight.
Should I count fat from cornmeal if I use milk or oil? Yes. This tool only estimates the cornmeal itself. Butter, oil, milk, eggs, and cheese add significant fat, so add those separately in your food diary.
Tips for Accurate Tracking
- Weigh dry cornmeal in grams instead of using cups; a cup of whole-grain cornmeal weighs more than a cup of degermed cornmeal.
- If you prepare a recipe that serves several people, weigh the total finished dish and divide by servings before applying the per-100g value.
- Whole-grain cornmeal can become rancid over time because the germ oil oxidizes. Rancid grains may taste bitter; store them in a sealed container in the refrigerator or freezer for longer shelf life.
- For the most accurate macro count, use the exact product from the USDA FoodData Central entry or the brand's official nutrition information rather than a generic table.
Cornmeal is a naturally low-fat grain, but the difference between whole-grain and degermed varieties can matter when you are tracking fat grams closely. Using a per-100g standard makes those differences visible and keeps your nutrition log consistent.