Coconut milk is completely dairy free. It is made from the flesh of mature coconuts, which is a plant, so it contains no lactose, no casein, and no other milk proteins found in animal dairy. People with lactose intolerance or a cow’s milk protein allergy can safely consume it.
What Coconut Milk Actually Contains
Traditional coconut milk is made by grating or scraping the white flesh from mature coconuts, then squeezing it through a strainer to extract the liquid. The result is a creamy, rich fluid that gets its texture entirely from the natural fat in coconut flesh, not from any animal source. At home, you can replicate this by blending unsweetened shredded coconut with warm water and straining through a cheesecloth.
Because coconut is a plant, the milk it produces has a very different nutritional profile from cow’s milk. Per 100 grams, coconut milk has about 31 calories, 2 grams of fat, nearly 3 grams of carbohydrates, and only 0.2 grams of protein. Whole cow’s milk, by comparison, has 61 calories, 3.2 grams of fat, 4.6 grams of carbohydrates, and 3.3 grams of protein. The biggest gap is protein: coconut milk provides almost none, while cow’s milk is a significant source.
Canned vs. Carton: Two Different Products
Not all coconut milk is the same, and the type you buy changes how you should use it. Canned coconut milk is thick, dense, and high in fat, with roughly 48 grams of fat per cup depending on the brand. It works as a substitute for heavy cream in soups, stews, and curries. Carton coconut milk is diluted with much more water, giving it a thinner consistency and milder flavor closer to cow’s milk. It typically contains around 35 grams of fat per cup and works better in coffee, smoothies, cereal, and light sauces.
Both types are dairy free, but their ingredients lists can look quite different.
Watch for Additives in Commercial Brands
Pure coconut milk is just coconut and water. Many commercial versions, however, include stabilizers and emulsifiers to prevent the fat from separating and to create a smoother pour. Common additions include guar gum, xanthan gum, and carrageenan. Some products also use emulsifiers like polysorbate 60, which some research suggests may irritate the gut lining and alter gut bacteria.
None of these additives are dairy ingredients, so they don’t change the dairy-free status of coconut milk. But if you want to avoid them, check the ingredient list and look for brands that contain only coconut extract (or coconut cream) and water. Canned coconut milk tends to have shorter ingredient lists than carton varieties, which more often rely on stabilizers and added flavors.
Fortification Gaps to Know About
One cup of plain coconut milk provides only about 20 milligrams of calcium and no vitamin D. Cow’s milk, by contrast, is naturally higher in calcium and is routinely fortified with vitamin D. Some carton coconut milks are fortified to close this gap, but not all of them, and fortification levels vary by brand. If coconut milk is your primary milk substitute, check the nutrition label to see whether calcium and vitamin D have been added, especially if you’re relying on it for kids or as a main beverage.
Labeling and Cross-Contamination
The FDA determined in 2023 that consumers generally understand plant-based milks like coconut milk are not actual dairy milk. Products labeled “coconut milk” are not required to carry a dairy warning, because they don’t contain dairy. Coconut itself is no longer classified as a major food allergen under updated FDA guidance, so you also won’t see it called out in a “Contains” statement on packaging, though it still must appear in the ingredient list.
The one scenario where a dairy-free label could be misleading is cross-contamination during manufacturing. Some coconut milk products are made in facilities that also process dairy. If you have a severe milk allergy (not just lactose intolerance), look for advisory statements like “made in a facility that also processes milk” on the packaging. These warnings are voluntary, not required by law, so contacting the manufacturer directly is the most reliable way to confirm a product is free from dairy traces.