Blog

Milk calories by type: whole, 2 percent, 1 percent and skim

October 27, 2026 · Viral Tandel

Looking up 2 milk nutrition facts usually turns into a comparison, because nobody checks one milk in isolation. Here are all four, from the United States Department of Agriculture, on the same basis: per 100 g, and per the 244 g cup USDA weighs.

Key takeaways

• Whole 61 kcal per 100 g, 2 percent 50, 1 percent 43, skim 34.
• Per 244 g cup: 149, 122, 105 and 83.
• Protein barely moves across the four, from 3.27 g to 3.43 g per 100 g.
• Fat is the entire difference: 3.2 g down to 0.08 g per 100 g.
• Carbohydrate is essentially flat too, because lactose is unaffected by skimming.

All four, side by side

Read the protein column. It goes 3.43, 3.38, 3.36, 3.27. That is a range of 0.16 g across the entire set, and it runs the opposite way to intuition: skim has marginally the most, because taking fat out leaves everything else slightly more concentrated.

The carbohydrate column behaves the same way. Lactose is in the water fraction of milk, not the fat, so skimming does not remove it.

Which means the whole comparison is one column. Fat goes from 3.2 g to 0.08 g per 100 g, and the calories follow it down.

What this is worth in practice

Sixty six calories a cup separates whole from skim. Whether that matters depends entirely on how you drink it.

If milk is a drink in your day, two or three cups of it, the choice is worth 130 to 200 calories and is one of the easier swaps available. If milk is a splash in coffee, the difference is a handful of calories and switching will not change anything except how your coffee tastes.

This is a general point worth more than the milk example. The size of a swap is the per-unit difference multiplied by how much you actually consume, and people routinely optimise small per-unit differences on things they barely eat while ignoring large ones on staples. A rough log across a full week, as argued in the case for a rough log every day, shows you which of your foods are actually load-bearing.

What is not on this page

Plant milks. Oat, almond, soy, coconut and the rest vary so much by brand, and between sweetened and unsweetened versions of the same brand, that a generic figure would be close to meaningless. This page uses USDA's dairy entries and stops there.

For those, the carton is the source. It is printed, it is specific to what you bought, and it beats any database average, which is the same reason barcode scanning is free and unlimited in the app rather than being treated as a fallback.

Also absent: lactose free milk is nutritionally close to its equivalent, since the lactose is split rather than removed, but check the carton if the figure matters to you.

Logging it

Measure once, then reuse. A cup is 244 g, a splash in coffee is a lot less, and the gap between what people say is a splash and what it actually is tends to be large.

KalTrack reads the carton panel directly, which is the right answer for anything that comes with printed figures. Try it on your milk.

This is general information about published nutrition data, not medical advice. If you are managing cholesterol, a dairy allergy or lactose intolerance, talk to a clinician or a registered dietitian.