Non-acidic foods are those with a pH above 4.6, which includes most vegetables, many fruits, grains, and proteins. If you’re looking for this list, you’re probably dealing with acid reflux, sensitive teeth, or digestive discomfort and want to know which foods are safe to eat. The good news: the majority of whole foods fall on the low-acid or neutral side of the pH scale. The high-acid culprits are a relatively short list.
How the pH Scale Applies to Food
The pH scale runs from 0 (most acidic) to 14 (most alkaline), with 7.0 being neutral. Pure water sits right at 7. In food science, anything below 4.6 is considered a high-acid food, while anything above 4.6 is classified as low-acid. Most of the foods people worry about, like citrus fruits, vinegar, and tomatoes, fall below that 4.6 line. But the vast majority of what you’d put on a dinner plate sits comfortably above it.
Vegetables: The Safest Category
Nearly all vegetables are non-acidic. Root vegetables like potatoes, sweet potatoes, carrots, and beets have pH values ranging from about 5.0 to 6.5. Leafy greens, broccoli, cauliflower, green beans, and squash all sit in a similar range. Corn falls between 5.9 and 7.3, making it one of the most neutral vegetables you can eat.
Green peppers range from 5.2 to 5.9, and even bell peppers in general stay above 4.6. Avocados, though technically a fruit, land between 6.3 and 6.6, nearly neutral. If you’re building meals around vegetables, you’re almost always in safe territory. The only vegetable-adjacent foods that dip into acidic range are pickled or fermented versions, where vinegar or fermentation drops the pH significantly.
Fruits That Are Low in Acid
Fruits are trickier because many popular ones are quite acidic. Oranges, grapefruits, lemons, limes, pineapple, and most berries all fall well below 4.6. But several fruits sit comfortably in the low-acid zone:
- Melons: Cantaloupe (pH 6.1 to 6.6), honeydew (6.0 to 6.7), and watermelon (5.2 to 5.6) are among the least acidic fruits available.
- Bananas: pH 4.5 to 5.2, with riper bananas trending higher and less acidic.
- Papaya: pH 5.2 to 6.0.
- Figs: pH 5.0 to 6.0.
- Mangoes: pH 5.8 to 6.0 for green varieties.
- Persimmons: pH 4.4 to 4.7, right on the borderline.
Tomatoes deserve special mention because many people assume they’re a vegetable and are surprised by their acidity. Vine-ripened tomatoes range from 4.4 to 4.7, which puts them right at the high-acid cutoff. If tomato-based sauces bother you, that’s why.
Proteins and Dairy
Most plain meats, poultry, and fish have a pH between 5.5 and 7.0 when raw, making them non-acidic foods. Chicken, beef, pork, and most fish fillets won’t cause problems from a pH standpoint. The issue with protein and acidity is more about preparation. Marinating in citrus or vinegar, adding tomato sauce, or serving with spicy seasonings can turn a neutral food into a reflux trigger.
Dairy is mixed. Milk sits around 6.4 to 6.8, close to neutral. Yogurt and cottage cheese are more acidic due to fermentation, typically falling between 4.0 and 4.8. Hard and aged cheeses vary widely. Eggs are close to neutral, with whole eggs around pH 7.0 to 7.8.
If you’re thinking about how foods affect your body’s internal chemistry rather than their direct pH, the picture shifts. Fruits and vegetables, even mildly acidic ones, produce alkaline byproducts when metabolized. Meat and cheese do the opposite: they generate acid that your kidneys filter out. This is why some nutrition sources describe lemons as “alkalizing” despite their very low pH of around 2.0. The lemon itself is acidic, but its mineral content (potassium, calcium, magnesium) creates an alkaline effect after digestion. For acid reflux, though, what matters is the pH of the food as it hits your esophagus and stomach, not what happens hours later in your kidneys.
Grains, Nuts, and Legumes
Most grains are non-acidic. Cooked rice, oatmeal, bread, and pasta all have pH values above 5.0. Plain crackers and cereals fall in a similar range. These make reliable staples if you’re avoiding acidic foods.
Legumes like lentils, chickpeas, and most beans are also low-acid, generally falling between 5.5 and 6.5. Nuts vary somewhat but are generally neutral. Almonds, in particular, are often recommended as a non-acidic snack.
Drinks to Choose and Avoid
Beverages are where acidity sneaks up on people. Coffee typically has a pH between 4.8 and 5.1, and its caffeine can relax the valve between your esophagus and stomach, compounding the problem. Regular tea is mildly acidic. Orange juice, lemonade, and most fruit juices land between 2.5 and 4.0. Carbonated drinks are acidic too, even plain sparkling water, which sits around 3.0 to 4.0 due to dissolved carbon dioxide.
Your best non-acidic drink options are plain water (pH 7.0), most herbal teas (chamomile and ginger tea tend to be close to neutral), and plant-based milks like almond or oat milk, which generally range from 6.0 to 7.0. Regular cow’s milk is also close to neutral.
Seasoning Without the Burn
Losing acidic ingredients doesn’t mean losing flavor. If citrus juice, vinegar, or tomato sauce are off the table, herbs like basil, cilantro, oregano, rosemary, ginger, and thyme can carry a dish. Olive oil mixed with parsley and oregano works as a pasta sauce replacement. Dill and basil can stand in for garlic and onions, which bother some people even though they aren’t particularly acidic on the pH scale.
Spices are worth sorting carefully. Cayenne, curry powder, and cinnamon can aggravate reflux symptoms in some people, while ginger and turmeric tend to be better tolerated. The key is that “spicy” and “acidic” are different things. A food can be spicy without being acidic, or acidic without tasting sour at all.
Putting It Together for Acid Reflux
If you’re choosing non-acidic foods specifically to manage reflux or GERD, the NIDDK identifies citrus fruits, tomatoes, chocolate, coffee, high-fat foods, mint, spicy foods, and alcohol as the most common triggers. Notice that not all of these are acidic. Chocolate and high-fat foods trigger reflux by relaxing the lower esophageal sphincter, not because of their pH. Mint does the same thing.
Eating at least three hours before lying down also makes a measurable difference in symptoms. So does losing weight if you carry extra pounds, particularly around the midsection. These two changes often matter more than fine-tuning the pH of individual foods. That said, building meals around vegetables, lean proteins, whole grains, melons, and bananas gives most people a solid foundation of foods that won’t aggravate symptoms from any angle.