The pH level of sugar is 7 because sugar is neutral. The pH of any substance that is neither an acid nor base is 7.
There are several other foods that are listed in the neutral category and also have a pH of 7. These include milk, vegetable oil and butter. The pH of other foods varies widely and depends on if the food is an alkali-forming food or an acid-forming food. For example, alkali foods, such as soy beans and lima beans, both have a pH of 12. Acid-forming foods, such as organ meat, liver and chicken, all have a pH of 3.