Nutrition labels list fat per serving, but comparing different products is much easier when you standardize everything to 100 grams. The Skim Fat Per 100g Calculator does exactly that for skim milk and nonfat dairy products — or for any custom food label you want to decode. Whether you are tracking macros, planning a low-fat diet, or just curious how “nonfat” a product really is, this tool converts portions into a clean per-100g number.
Choose a standard product like fluid skim milk, skimmed evaporated milk, nonfat Greek yogurt, or fat-free cottage cheese, then enter your portion in grams or ounces. The calculator returns fat per 100g, total fat in your portion, fat percentage by weight, calories from fat, and the contribution to the daily value for fat. You can also switch to Custom and enter any fat-per-100g value from a label, making the tool useful for package comparisons across the dairy aisle and beyond.
🥛 Skim Fat Per 100g Calculator
Convert skim milk and nonfat dairy portions into fat per 100g and total fat.
How to Use This Tool
Start by selecting a product from the dropdown. If you choose one of the standard skim-dairy options, the fat-per-100g field fills in automatically. You can still override that number if your carton lists a slightly different value. Next, enter the amount you plan to eat or drink in grams, ounces, kilograms, or pounds. The quick-fill buttons set common portions: 100 g, 150 g, one US cup (about 244 g), or one metric cup (245 g). If you are working with more than one identical portion, enter the count in the servings box.
Click Calculate Fat to see fat per 100g, total fat in your portion, fat as a percentage of weight, calories from fat, and the share of the daily value for fat. Press Reset to clear the form and start again.
How the Calculation Works
Per 100g is the standard reference amount used on food labels and in nutrition databases. It lets you compare foods without being misled by different serving sizes. The calculator first converts your amount to grams, then applies this simple rule:
For example, 244 g of skim milk at 0.08 g fat per 100g gives 244 × 0.08 ÷ 100 = 0.195 g fat.
Because dietary fat provides 9 kilocalories per gram, the calculator multiplies fat grams by 9 to show calories from fat. The daily value for total fat uses the FDA reference of 78 g per day on a 2,000-calorie diet; the result is therefore total fat ÷ 78 × 100%. Fat percentage by weight is total fat ÷ total food weight × 100%.
Reference Table: Fat in Skim & Nonfat Dairy
These averages come from typical USDA nutrient values. Always check the product label because brands and formulations vary.
| Product | Fat per 100g |
|---|---|
| Skim milk (fluid) | 0.08 g |
| 1% low-fat milk | 1.0 g |
| 2% reduced-fat milk | 2.0 g |
| Whole milk | 3.3 g |
| Skimmed evaporated milk | 0.25 g |
| Nonfat Greek yogurt | 0.40 g |
| Fat-free cottage cheese | 0.30 g |
| Skim milk powder (dry) | 0.80 g |
These values are per 100 g of product by weight. A US cup of fluid skim milk weighs close to 244 g, so multiply the cup’s weight by the table value to estimate total fat.
Worked Examples
Common Mistakes to Avoid
- Mixing up per serving and per 100g. A 30 g serving with 5 g fat is very different from 5 g fat per 100g. Always use the per-100g number when comparing products.
- Forgetting to convert units. If your portion is in ounces, convert to grams before applying the formula. This calculator does that for you, but the concept matters when reading labels.
- Using the wrong daily value. The daily value for total fat is 78 g, not 65 g or a percentage of calories.
- Ignoring multiple servings. If you eat two portions, multiply the fat by two. A seemingly small per-100g number can add up.
- Assuming volume equals weight. 100 ml of milk is not exactly 100 g because milk’s density is about 1.03 g/ml. For skim milk, 1 US cup is about 244 g.
Frequently Asked Questions
If you are also tracking carbohydrates in dairy, see skim milk net carbs calculator or milk carbs per 100g calculator. For precise nutrient data, consult USDA FoodData Central at fdc.nal.usda.gov, and review FDA’s daily value guidance at FDA Nutrition Facts Label.