What is the pH of Starbucks House?
Mainstream Coffee Chains · Starbucks
Starbucks House pH level
Verification status: Self-reported number (no named independent lab). This number was reported by the brand or a secondary source -- it has not been independently lab-verified.
LOW CONFIDENCE — figure from HealthWise, a competing low-acid brand's comparative kitchen test (spring water, recommended grounds); not independent and not Starbucks' own measurement
Measurement conditions
pH varies by brew method, roast, and water chemistry. Values measured under different conditions are not directly comparable.
Notes
LOW CONFIDENCE — figure from HealthWise, a competing low-acid brand's comparative kitchen test (spring water, recommended grounds); not independent and not Starbucks' own measurement
Related: other Mainstream Coffee Chains
- Dunkin' DonutspH: 5.18
- McCafé Premium RoastpH: Not published
- Peet's Major Dickason'spH: Not published
- Tim Hortons Original BlendpH: Not published
- Caribou Coffee brewed coffeepH: Not published
Quick facts
Canonical: https://www.steadymatcha.com/coffee-acidity/starbucks-house
Matcha is less acidic than coffee -- but it is not alkaline
Brewed matcha is mildly acidic at pH 5.6-6.3 (Najman et al., Molecules (2023)). Brewed coffee sits around pH 4.85-5.1. Because pH is a logarithmic scale, that gap means coffee delivers several times more acid per cup than matcha -- a real difference, even though neither drink is alkaline.
Second lever: caffeine. Matcha contains roughly half the caffeine of a cup of coffee, and its L-theanine content produces a slower, steadier release. For people who experience jitters, crashes, or digestive discomfort from coffee, the combination of lower acidity and lower caffeine load is often the meaningful difference.
Note: this is general information, not medical advice. If you have GERD, acid reflux, or a digestive condition, consult a healthcare provider before changing your diet.