Cherries are moderately acidic, with pH values ranging from about 3.25 to 4.54 depending on the variety and how they’re processed. That places them in the middle of the fruit acidity spectrum, less acidic than lemons or cranberries but more acidic than bananas or watermelon. The variety you choose matters a lot: sweet cherries sit closer to neutral, while tart cherries and processed cherry products are noticeably more acidic.
pH Ranges by Cherry Variety
Fresh sweet cherries from California typically fall between pH 4.01 and 4.54, making them the mildest option. Royal Ann cherries, a popular light-skinned variety used in maraschino production, are slightly more acidic at 3.80 to 3.83. Red cherries packed in water, the kind you find canned or jarred, drop further to a pH of 3.25 to 3.82. For reference, pure water is neutral at pH 7, and each whole number on the scale represents a tenfold difference in acidity. So a cherry at pH 3.5 is roughly ten times more acidic than one at pH 4.5.
The general rule is simple: the darker and more tart the cherry, the lower the pH. Bright, sweet varieties like Rainier or Bing tend toward the milder end of the range, while sour varieties like Montmorency pack more acid per bite. If you’re sensitive to acidic foods or managing acid reflux, sweet cherries are your better option.
What Makes Cherries Acidic
Malic acid is the dominant acid in cherries, accounting for roughly 70% of their total acid content. It’s the same compound that gives green apples their sharp bite. Cherries also contain smaller amounts of citric acid and other organic acids, but malic acid drives the flavor profile. This is why tart cherries taste distinctly different from citrus fruits, which are dominated by citric acid. The sourness in cherries has a smoother, rounder quality compared to the bright sharpness of an orange or grapefruit.
How Ripeness Changes Acidity
Cherries become less acidic as they ripen. Research on sour cherry cultivars shows that titratable acidity (the total amount of acid in the fruit) drops steadily from the earliest picking stage through commercial harvest. At the same time, sugar content rises significantly. The ratio of sugar to acid increases by 54 to 59% over the ripening window, which is why a fully ripe dark red cherry tastes so much sweeter than one picked at a light red stage, even though both contain acid.
The pH of the juice also climbs during ripening, meaning the fruit literally becomes less acidic at a chemical level, not just in perceived taste. If you pick or buy cherries that are slightly underripe (lighter in color, firmer), expect a noticeably more sour and acidic experience. Fully ripe cherries with deep, dark coloring will have the highest sugar-to-acid ratio and the mildest acidity.
Fresh Cherries vs. Processed Cherry Products
Processing tends to push cherries toward the more acidic end of the spectrum. Red cherries packed in water register as low as pH 3.25, well below the 4.01 to 4.54 range of fresh California cherries. This shift happens partly because processing often uses tart varieties, and partly because packing liquids can concentrate or release acids from the fruit. Dried cherries, cherry preserves, and cherry pie fillings often have added citric acid as a preservative, which lowers pH further.
Tart cherry juice concentrate, popular as a supplement for sleep and recovery, is among the most acidic cherry products you’ll encounter. If you’re drinking it regularly, diluting it with water can reduce its contact with tooth enamel and lessen the chance of stomach irritation.
How Cherries Affect Your Body’s Acidity
Despite being acidic going in, cherries have a mild alkalizing effect once digested. Their PRAL score (a measure of how foods influence acidity in the body after metabolism) is 3.6 for a serving of about 12 cherries. A positive PRAL score technically indicates a slight acid-forming tendency, but this is extremely low compared to meat, cheese, or grains. In practical terms, cherries are close to neutral in their metabolic impact and far less acid-forming than most protein-rich foods.
The minerals in cherries, particularly potassium, help buffer acidity during digestion. This is why many fruits that taste acidic don’t actually make your body more acidic overall. For people concerned about dietary acid load, cherries are a non-issue and fall squarely in the fruit-and-vegetable category that nutrition guidelines consider neutral to alkalizing.
Comparing Cherries to Other Fruits
- More acidic than cherries: lemons (pH 2.0–2.6), grapefruits (pH 3.0–3.7), and grapes (pH 2.8–3.8)
- Similar acidity to cherries: blueberries (pH 3.1–3.3), peaches (pH 3.3–4.0), and apricots (pH 3.3–4.8)
- Less acidic than cherries: bananas (pH 4.5–5.2), cantaloupe (pH 6.1–6.6), and watermelon (pH 5.2–5.6)
Sweet cherries land in comfortable middle ground. They’re acidic enough to taste bright and flavorful, but mild enough that most people tolerate them without digestive discomfort. If other stone fruits like peaches or plums sit well with you, cherries will too.