Is there lactose in milk powder?
High — it's dried milk.
Milk powder is milk with the water removed, so it's very concentrated in lactose by weight. It also hides in many processed foods, which is worth knowing if you react to things you didn't expect.
Milk powder is milk with all the water taken out, so gram for gram it’s one of the most lactose-dense foods there is. You rarely eat it by the spoonful — but it turns up as “milk solids” in chocolate, baked goods, packet sauces and more, which is why it’s worth knowing about.
Label check: if a processed food upsets you and you can’t see obvious dairy, check the label for “milk solids” or “milk powder.” It’s a very common hidden source of lactose.
How much lactose is in milk powder?
Skim milk powder contains around 50–52 g of lactose per 100 g — roughly 13 g in the ~25 g it takes to make a glass. Reconstituted back to normal strength, it’s similar to ordinary milk.
| Food | Lactose per 100 g | Per typical serve |
|---|---|---|
| Skim milk powder | 50–52 g | ~13 g (25 g, makes a glass) |
| Regular milk | 4.8 g | ~12 g (250 mL) |
| Lactose-free milk | <0.1 g | ~0.1 g (250 mL) |
Figures compiled from food-composition databases — see the full lactose chart & sources.
When you can still enjoy it
For drinks, lactose-free milk (or a plant milk) beats reconstituting powder. When it’s a hidden ingredient, our lactose content chart and free cheat sheet help you spot where “milk solids” show up.
If milk powder isn't handy, reach for…
Common questions
Is milk powder high in lactose?
Why do processed foods upset me?
Is skim milk powder lower in lactose?
Want the full picture? Grab our free Living Lactose-Free in Australia cheat sheet — it sorts 60+ foods like this one so you never have to guess at the supermarket again.