An ounce (abbreviated as "oz") is a unit used for measuring weight and volume. One ounce equals 28 grams or 1/16th of a pound. In other words, one ounce is equal to two tablespoons or six teaspoons. This makes it easy to remember what an ounce looks like when measuring things out. How Many Fluid Ounces Are In A Cup? First of all, we can help with that one: 1 cup is equal to 8 ounces (oz), 16 tablespoons (Tbsp), 48 teaspoons (tsp), or 240 milliliters (mL). Based on their names, you can probably guess that people began using the tools they had, like cups, teaspoons, and tablespoons, to measure ingredients in the kitchen. Learn how to convert ounces to cups for liquid and dry ingredients with handy charts and formulas. Find out why dry ingredients vary in ounces per cup and how to measure them accurately. In the United States, a standard cup measurement is equivalent to 8 fluid ounces (abbreviated as "fl oz"). This conversion is important to know because it's widely used in many situations, not just in recipes. When you encounter a measurement of 1 cup for a liquid, it simply means you should use 8 fluid ounces of that liquid.