Calories in Starbucks Flat White with semi-skimmed milk come to 59, matching every other milk version of this drink exactly — semi-skimmed is simply the UK term for what shows up as low-fat on US menu boards.
Fat sits at 2.0g and sugar at 5.1g, unchanged from the whole milk pour since this is such a small drink that milk type has minimal impact overall.
If you’re used to ordering with UK milk terminology, the same naming applies across the menu — see Chai Tea Latte with semi-skimmed milk for another example.
Flat White - semi-skimmed milk Nutrition Facts
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Flat White - semi-skimmed milk
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Long-Term Health Impact
After 1 Week
Drinking a daily Grande Flat White - semi-skimmed milk adds 413 calories to your week — about 79 minutes of brisk walking to offset.
After 1 Month
Over a month, that's 1770 calories — roughly 0.5 lb of potential weight gain if it isn't offset by activity.
After 1 Year
Over a year, a daily Grande Flat White - semi-skimmed milk totals 21535 calories and 1.9kg of sugar — equivalent to about 215 miles of jogging to burn off.