Semi-Skimmed Milk — calories & nutrition

Semi-skimmed milk contains approximately 50 calories per 100ml. A standard 200ml glass delivers around 100 kcal, while a larger 250ml glass is about 125 kcal. The Slimming World HexA allowance of 350ml contains approximately 175 calories. These figures are for plain semi-skimmed cow's milk — flavoured or sweetened milks vary considerably and will typically be higher in calories.

Yes — semi-skimmed milk is a Healthy Extra A (HexA) on Slimming World. The daily allowance is 350ml. This covers your calcium needs for the day and can be used across multiple drinks and meals. If you prefer skimmed milk, the HexA allowance is slightly more generous at 400ml. Whole milk is also a HexA but at a smaller 200ml allowance. You receive one HexA per day as part of your Food Optimising plan.

Skimmed milk is lower in calories and fat — around 35 kcal per 100ml versus 50 kcal for semi-skimmed. Over a day, using 350ml of skimmed milk instead of semi-skimmed saves around 52 calories. However, both are excellent choices for weight loss, and the small calorie difference is unlikely to be meaningful. Some research suggests the fat in semi-skimmed milk improves satiety and the absorption of fat-soluble vitamins. Choose whichever you actually enjoy drinking — consistency matters more than small calorie differences.

Yes — small amounts of semi-skimmed milk used in cooking, such as in sauces, mashed potato, or scrambled eggs, are generally considered negligible on Slimming World and do not need to be Synned. The plan acknowledges that trace amounts of milk used as a cooking ingredient are not the same as drinking a glass. If you are using a larger amount — say 200ml or more in a recipe — you should count it against your HexA allowance or add the appropriate Syns for any excess beyond your daily allowance.