Skim milk leads 6–3 · 9 categories decided · 1 tie
Both foods compared at 100 kcal.
The verdict
Skim milk comes out ahead, winning 6 of 9 nutrient match-ups.
Pick Buttermilk for less sugar, more iron and more vitamin C.
Pick Skim milk for more protein, less saturated fat, less sodium, more potassium, more calcium and more magnesium.
Evenly matched on fiber.
Head-to-head
- Energy100 kcal100 kcal
- Proteinmore is better8.28 g9.91 gWIN
- Carbohydrate11.98 g14.59 g
- Fibermore is better0 g0 g
- Total sugarsless is betterWIN13.4 g14.97 g
- Total fat2.68 g0.24 g
- Saturated fatless is better1.65 g0.16 gWIN
- Sodiumless is better370 mg123.53 mgWIN
- Potassiummore is better377.5 mg458.82 mgWIN
- Calciummore is better290 mg358.82 mgWIN
- Ironmore is betterWIN0.13 mg0.09 mg
- Magnesiummore is better27.5 mg32.35 mgWIN
- Vitamin Cmore is betterWIN2.5 mg0 mg
- Vitamin Dmore is better——
Winners are decided by deterministic per-metric rules on the stated basis; ties and missing data don’t score (missing ≠ zero). Educational information only — not medical advice.

