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Milk types

What is whole milk?

Quick answer

Whole milk is cow's milk sold with its natural milk fat left in, at no less than 3.25% milk fat under the US standard. It is the richest of the common milk types and has about 150 calories per cup. Skim, 1% and 2% milk are the same milk with more fat removed.

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In this article
  1. What does whole milk mean?
  2. How is whole milk different from 2%, 1% and skim?
  3. Is whole milk the same as full-fat or regular milk?
  4. Who chooses whole milk?
  5. What does whole milk contain?

What does whole milk mean?

"Whole" means the milk still has most of its fat. In the US, the federal standard for milk (as summarized by the International Dairy Foods Association) sets at least 3.25% milk fat and at least 8.25% milk solids other than fat. Dairies usually adjust the fat to a set level, so it is not completely untouched. Most whole milk is pasteurized and homogenized, which keeps the cream from separating.

How is whole milk different from 2%, 1% and skim?

Type Milk fat (US labels)
Whole 3.25% or more
Reduced fat (2%) 2%
Low fat (1%) 1%
Skim (nonfat) Less than 0.5%

The protein, calcium and lactose are broadly similar across the types. The main difference is fat and calories. A cup of whole milk has roughly 150 calories, while skim has roughly 80, according to USDA nutrient data as commonly quoted.

Is whole milk the same as full-fat or regular milk?

Yes. Whole milk and full-fat milk mean the same product. In many stores "regular" milk also means whole, but not always, so read the label. Outside the US the fat level differs a little by country: whole milk in the UK is typically somewhere around 3.5% to 4%. Always check the label.

Who chooses whole milk?

People pick it for taste, creaminess and cooking. Health advice varies by age and country. Many national guidelines suggest lower-fat dairy for most adults, while for young children a doctor or health visitor may recommend whole milk. Ask your doctor or dietitian what fits you.

What does whole milk contain?

  • Water, milk fat, protein and lactose
  • Calcium, phosphorus and other minerals
  • Vitamins A and D: adding them is optional under the US milk standard, and many brands add vitamin D, so check the label

People also ask

What percent is whole milk?

In the US, whole milk is at least 3.25% milk fat.

Is whole milk the same as full-fat milk?

Yes. Both mean milk that still has its natural fat, at the standard level.

What is the difference between whole milk and 2% milk?

Whole milk has at least 3.25% fat, 2% milk has 2%. The extra fat gives whole milk more calories and a creamier taste.

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. International Dairy Foods Association: Milk definition (federal standard of identity), read 5 Nov 2026
Written by Drinks Type Editorial Team · Published Jul 6, 2025 · Updated Nov 5, 2026
About · How we verify this · Editorial policy · Corrections

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