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Milk types

What is the difference between Nonfat Milk and Skim Milk?

Quick answer

In the US, there is no official difference we could find. FDA's labeling rule lets milk products use the word skim as a fat-free term, and USDA lists one product, nonfat fluid milk, as (fat free or skim), with 0.08 g of fat per 100 g. Fat free means under 0.5 g of fat per serving, not 0.5% fat.

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In this article
  1. Is skim milk the same as nonfat milk?
  2. Is skim milk 0.5% fat?
  3. How much is in a cup?
  4. Skim milk in the UK

Is skim milk the same as nonfat milk?

For US shoppers, yes. USDA FoodData Central names the product ‘Milk, nonfat, fluid, with added vitamin A and vitamin D (fat free or skim)’, one listing for all three names. FDA’s nutrient-claim rule (21 CFR 101.62) defines fat free as less than 0.5 g of fat per serving and says that for milk products, the word skim may be used on the label.

We found no official source that describes a different recipe, fat level or taste for skim versus nonfat. The same goes for fat free and 0% milk: they describe the same no-fat product. ‘Nonfat dry milk’ is a powder and a separate product that we did not research.

Is skim milk 0.5% fat?

No. The 0.5 figure in the FDA rule is grams of fat per serving, not a percentage. USDA measures nonfat milk at 0.08 g of fat per 100 g.

How much is in a cup?

Per cup (our calculation from USDA per 100 g) Nonfat (246 g) Whole (244 g)
Calories 84 149
Fat 0.2 g 7.9 g

A cup of nonfat milk also has about 8.4 g of protein and 325 mg of calcium (our calculation).

Skim milk in the UK

The NHS uses the word skimmed. It says skimmed and 1% fat milks are lower in fat but still keep milk’s nutritional benefits. It adds that they should not be the main drink for children under 5, because they lack enough calories and nutrients for young children. Ask a doctor or dietitian about your child’s milk.

People also ask

Is nonfat milk the same as skim milk?

In the US, yes as far as we found: USDA lists it as one product, 'nonfat ... (fat free or skim)', and FDA lets milk use the word skim as a fat-free term.

Is skim milk fat free?

Fat free means under 0.5 g of fat per serving under FDA rules. USDA measures nonfat fluid milk at 0.08 g per 100 g.

Can toddlers drink skim milk?

The NHS says skimmed and 1% milk should not be the main drink for children under 5. Ask a doctor or dietitian.

General information only, not medical advice. If you have a health condition or are pregnant, ask your doctor before changing what you drink.

Sources

  1. USDA FoodData Central: Milk, nonfat, fluid, with added vitamin A and vitamin D (fat free or skim) (746776), read 5 Nov 2026
  2. eCFR: 21 CFR 101.62 Nutrient content claims for fat, fatty acid, and cholesterol content, read 5 Nov 2026
  3. NHS: Milk and dairy nutrition, read 5 Nov 2026
Written by Drinks Type Editorial Team · Published Apr 24, 2023 · Updated Nov 5, 2026
About · How we verify this · Editorial policy · Corrections

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