Cups to Ounces Converter: Fluid Ounces and Weight Ounces Shown Side by Side

1 cup equals 8 fluid ounces, not 16. The 16 figure comes from a different unit system: 1 US pint equals 16 fluid ounces, and 1 pint equals 2 cups. So 2 cups = 16 fluid ounces = 1 pint. The confusion sometimes arises from US package labeling: a standard 16-oz (1-pound) container of sour cream holds 2 cups of product; a 16-fl-oz bottle of juice holds 2 cups. In both cases, “16 oz” refers to 2 cups, not 1. The simple relationship to remember: 1 cup = 8 fluid ounces. 2 cups = 1 pint = 16 fluid ounces. 4 cups = 1 quart = 32 fluid ounces. 16 cups = 1 gallon = 128 fluid ounces. These relationships hold for fluid ounces only. For weight ounces, the relationship is ingredient-specific and does not follow this simple doubling pattern.

¼ cup equals 2 fluid ounces by volume. In weight ounces: ¼ cup of water = 2.09 oz wt, ¼ cup of flour = 1.06 oz wt, ¼ cup of sugar = 1.76 oz wt, ¼ cup of butter = 2.00 oz wt, ¼ cup of milk = 2.15 oz wt, ¼ cup of olive oil = 1.91 oz wt, ¼ cup of honey = 3.00 oz wt, ¼ cup of rolled oats = 0.79 oz wt, ¼ cup of cocoa powder = 0.75 oz wt, ¼ cup of chocolate chips = 1.50 oz wt. The ¼ cup (2 fluid ounces) appears commonly in US recipes for small amounts of oil, vinegar, lemon juice, broth, and condiments. For these liquid ingredients, 2 fluid ounces = ¼ cup is always correct. For dry ingredients like flour or cocoa: the weight in ounces at ¼ cup is much less than 2 oz, ranging from 0.75 oz for cocoa powder to 1.76 oz for sugar. When a recipe says “2 oz of parmesan cheese,” it means weight, not volume; 2 oz of grated parmesan by weight is approximately ¼ to ⅓ cup depending on how finely grated, far less than ¼ cup of shredded parmesan.

⅓ cup equals 2.67 fluid ounces (2 and 2/3 fluid ounces) by volume. In weight ounces: ⅓ cup of water = 2.78 oz wt, ⅓ cup of flour = 1.41 oz wt, ⅓ cup of sugar = 2.35 oz wt, ⅓ cup of butter = 2.67 oz wt (approximately one half-stick plus a bit more), ⅓ cup of milk = 2.87 oz wt, ⅓ cup of honey = 4.00 oz wt. The ⅓ cup is one of the standard US measuring cup sizes, useful for ingredients appearing in modest but not tiny amounts. For oil-based salad dressings, ⅓ cup of oil is a common amount: at 7.69 oz per cup for vegetable oil, ⅓ cup = 2.56 oz by weight. The common confusion with ⅓ cup: a recipe calling for “2 oz of lemon juice” means 2 fluid ounces = ¼ cup, not ⅓ cup. A recipe calling for “2.67 fl oz of lime juice” means ⅓ cup exactly. Since no measuring cup has a marking for 2.67 fluid ounces, the ⅓ cup measure is the correct tool for this amount.

¾ cup equals 6 fluid ounces by volume. In weight ounces at ¾ cup: water = 6.26 oz wt, whole milk = 6.46 oz wt, vegetable oil = 5.77 oz wt, butter = 6.00 oz wt, flour (spooned) = 3.17 oz wt, granulated sugar = 5.29 oz wt, honey = 8.99 oz wt, brown sugar (packed) = 5.82 oz wt, rolled oats = 2.38 oz wt, sour cream = 6.35 oz wt. The ¾ cup is a common baking amount, appearing in the majority of US cookie recipes for sugar (both granulated and brown), in quick bread and muffin recipes for buttermilk or yogurt, and in salad dressing recipes for oil. The 6 fluid ounce value for ¾ cup is measurable on a standard 2-cup US liquid measuring cup (which typically shows ¼-cup and fluid-ounce markings); the 6 fl oz line corresponds exactly to the ¾ cup mark. This makes the ¾ cup one of the easiest fractional cup measurements to confirm on a liquid measuring cup.

Almost exactly. 8 ounces of cream cheese by weight equals approximately 1 cup by volume (225 to 227 grams, or 8 oz). An 8-oz standard US block of cream cheese (Philadelphia, Kirkland, store brands) fills approximately 1 US cup when softened to room temperature and measured in a cup. This is why many US recipes say either “8 oz cream cheese” or “1 cup cream cheese (one block)” and mean the same thing. In cold, block form, the 8-oz package does not fill a cup neatly because of its rectangular shape and firm texture; when softened: spoon the softened cream cheese into a measuring cup and level it off, and 8 oz will fill 1 cup. For cheesecake recipes: two 8-oz blocks = 2 cups; three blocks = 3 cups. The cream cheese weight-to-volume correspondence (8 oz = 1 cup) is one of the closest equivalencies in US baking, making it easy to use either measure interchangeably. Compare to flour, where 8 oz weight does NOT equal 1 cup volume (it equals approximately 1.9 cups).

16 fluid ounces of any liquid equals exactly 2 US cups (1 pint). This is one of the most useful volume equivalencies to know for US cooking because many US ingredient packages are sold in 16-oz sizes: a 16-oz carton of chicken broth = 2 cups, a 16-fl-oz bottle of ketchup = 2 cups, a 16-oz container of sour cream = 2 cups (by weight for dairy, very close to 2 cups by volume). The practical shortcut: anything labeled “16 oz” in the beverage/liquid section of a US store contains 2 cups. For US soda bottles: a standard 20-fl-oz bottle = 2.5 cups. A 12-fl-oz can (the standard US soda can) = 1.5 cups. A 2-liter bottle = approximately 8.45 cups (67.6 fl oz). In baking, a 14.5-oz can of diced tomatoes is labeled by weight; 14.5 oz weight of tomatoes occupies approximately 1.75 cups of volume. A 15-oz can of beans by weight occupies approximately 1.5 to 1.75 cups of volume. For canned goods, always assume the ounce label is weight ounces (the weight of the contents including liquid), not fluid ounces.

US liquid measuring cups (the clear glass or plastic pitchers with a handle, made by Pyrex, Anchor Hocking, OXO, and others) show both cup markings and fluid ounce markings because these two units are used interchangeably in different US recipe formats. A 2-cup measuring cup typically shows: cup markings at ¼, ½, ¾, 1, 1¼, 1½, 1¾, 2 cups, and fluid ounce markings at 2, 4, 6, 8, 10, 12, 14, 16 fl oz. The two scales perfectly overlap: the 8 fl oz mark is the same level as the 1-cup mark, the 16 fl oz mark is the same level as the 2-cup mark. Liquid measuring cups are designed for liquids (which is why they show fluid ounces alongside cups) and should not be used for dry ingredients like flour; the open-top design of a liquid measuring cup makes leveling dry ingredients off the brim impractical, and the scooping action of a dry measuring cup into a narrow-mouthed liquid measuring cup further compresses the ingredient. Dry measuring cups (the nested set of individual ¼, ⅓, ½, and 1 cup sizes with flat rims designed for leveling) are calibrated in the same volume as liquid measuring cups, but their design is optimized for spooning dry ingredients in and leveling off the top. One set for liquids, one set for solids: the correct kitchen setup for accurate measurement.

Determine whether the recipe’s ounces are fluid ounces or weight ounces first. For fluid ounces to cups: divide by 8. 4 fl oz = ½ cup. 12 fl oz = 1½ cups. 6 fl oz = ¾ cup. 2 fl oz = ¼ cup. This is always exact and works for any liquid. For weight ounces to cups: use the ingredient-specific conversion. Find the ingredient in the table or calculator above, look up its weight-ounces-per-cup value, and divide the recipe’s weight-ounce amount by that value. Example: 6 oz of granulated sugar, at 7.05 oz per cup, equals 6 / 7.05 = 0.851 cups, approximately ¾ cup plus 1 tablespoon. Example: 5 oz of all-purpose flour (spooned, 4.23 oz per cup) equals 5 / 4.23 = 1.18 cups, approximately 1 cup plus 3 tablespoons. Example: 4 oz of butter (8 oz per cup) equals 4 / 8 = 0.5 cups = 1 stick. If the recipe does not specify which type of ounce: for liquid ingredients (broth, juice, milk, water, wine, oil), assume fluid ounces and divide by 8 for cups. For dry baking ingredients (flour, sugar, oats, cocoa), assume weight ounces and use the ingredient-specific converter. For proteins and produce (chicken, cheese, berries): always weight ounces.

2 cups of all-purpose flour equals 16 fluid ounces by volume and approximately 8.47 weight ounces (240 grams, spooned-and-leveled method). This is one of the most important conversions in US baking because “2 cups of flour” is the single most common flour quantity in American recipes (appearing in most standard cookie, quick bread, and cake recipes), and “8.47 oz” tells you that if a recipe calls for “8 oz of flour by weight,” you need slightly less than 2 cups. The distinction matters: 8 oz of flour by weight, measured by spooning and leveling, equals approximately 1.89 cups; if you use 2 full cups (2 × 120g = 240g = 8.47 oz), you are adding 5.9 percent more flour than specified. For most casual baking this difference is negligible. For precision recipes like croissants, macarons, or delicate chiffon cakes: it is significant. The 2-cup / 8.47-oz correspondence also explains why “a pound of flour” (16 oz by weight) equals approximately 3.8 cups (16 / 4.23), not 2 cups as the fluid-ounce parallel would suggest. A 5-pound bag of all-purpose flour contains approximately 19 cups.

1 US tablespoon equals ½ fluid ounce, or exactly 14.787 milliliters. This is a fixed relationship: 2 tablespoons = 1 fluid ounce, 16 tablespoons = 1 cup = 8 fluid ounces, 48 tablespoons = 1 pint = 16 fluid ounces. Common tablespoon-to-fluid-ounce conversions: 1 tablespoon = 0.5 fl oz, 2 tablespoons = 1 fl oz, 4 tablespoons = 2 fl oz = ¼ cup, 8 tablespoons = 4 fl oz = ½ cup, 12 tablespoons = 6 fl oz = ¾ cup, 16 tablespoons = 8 fl oz = 1 cup. These fluid ounce conversions for tablespoons are fixed and work identically for every liquid ingredient. For weight ounces per tablespoon: divide the per-cup weight by 16 to get the per-tablespoon weight. 1 tablespoon of water = 0.52 oz wt. 1 tablespoon of butter = 0.50 oz wt. 1 tablespoon of flour = 0.265 oz wt. 1 tablespoon of granulated sugar = 0.441 oz wt. 1 tablespoon of honey = 0.748 oz wt. These per-tablespoon weights are useful for calculating the nutritional content of recipes and for very small scaling adjustments.

For weight ounces: yes. The avoirdupois ounce used for weight in the US and UK is identical: 28.3495 grams per ounce. A UK recipe calling for “4 oz of butter” means the same weight as a US recipe calling for “4 oz of butter.” For fluid ounces: no. The US fluid ounce is 29.5735ml; the UK (imperial) fluid ounce is 28.4131ml. The US fluid ounce is about 4 percent larger than the UK fluid ounce. 1 UK fluid ounce = approximately 0.961 US fluid ounces. 1 US cup (8 US fl oz = 236.6ml) is not the same as a UK cup or an Imperial cup, since the UK uses a 284ml (half-pint) cup in older recipes and a 250ml metric cup in modern recipes. For most practical cooking purposes, the difference between US and UK fluid ounces is small enough to be negligible (a 4 percent difference); a recipe calling for 8 UK fluid ounces produces approximately 227ml, while 1 US cup = 237ml, a difference of 4.4 percent that affects texture only in the most precision-sensitive applications. For weight ounces used in baking: US and UK recipes are fully interchangeable since the weight ounce is identical in both countries.

1 cup of Greek yogurt equals 8 fluid ounces by volume and approximately 8.64 weight ounces (245 grams) by mass. These two values are very close, which is why recipes can say either “1 cup of Greek yogurt” or “8 oz of Greek yogurt” and produce nearly identical results. A standard US single-serve Greek yogurt container holds 5.3 oz (150g), which equals approximately ⅔ cup. A standard 16-oz container of Greek yogurt holds 2 cups. A 32-oz family-size container holds 4 cups. The near-equality of fluid ounces and weight ounces for Greek yogurt (8 fl oz vs 8.64 oz wt, a 7.9 percent difference) makes it one of the most interchangeable ingredients between volume and weight measurement in American cooking and baking, alongside butter, sour cream, and other dairy products with densities close to water. Regular (non-strained) plain yogurt behaves similarly, at approximately 245g per cup. For skyr (Icelandic-style yogurt, a thicker product sold in US stores under brands like Siggi’s): the weight per cup is slightly higher at approximately 250 to 260g due to even more moisture removal during production.

Wet and dry measuring cups hold the same volume (1 US cup = 240ml for both) but are designed for different measuring techniques. Wet measuring cups are transparent pitchers with a handle and pour spout, with measurement markings on the side including both cup and fluid ounce markings. They are designed for liquids: you set the cup on a flat surface, pour the liquid in, and read the level at eye height for accuracy. Filling a wet measuring cup to the brim is difficult for liquids that do not stay perfectly still, which is why the below-the-brim reading approach works better. Dry measuring cups are solid nested cups with flat rims, designed to be filled to overflowing and then leveled off with a straight edge. You cannot level a liquid in a wet measuring cup the same way; the flat-rim dry cup design makes leveling easy and precise. The measurement standards are identical: 1 cup = 1 cup regardless of which cup type you use. The practical difference: using a wet measuring cup for flour (trying to spoon flour in and level off the top of a pour-spout cup) is awkward and produces inconsistent results; using a dry measuring cup for water (trying to pour water into a ¼-cup solid cup and carry it to the mixing bowl without spilling) is equally awkward. Each cup type is optimized for its ingredient type. Both types are readily available: a 2-cup Pyrex liquid measuring cup costs $8 to $12; a set of four dry measuring cups costs $6 to $15 at most US kitchenware stores.

US volume measurement hierarchy in fluid ounces: 1 teaspoon = 0.1667 fl oz. 1 tablespoon = 0.5 fl oz. 1 fluid ounce = 1 fl oz. 1 cup = 8 fl oz. 1 pint = 16 fl oz = 2 cups. 1 quart = 32 fl oz = 4 cups = 2 pints. 1 gallon = 128 fl oz = 16 cups = 8 pints = 4 quarts. Common US container sizes in this context: a 12-fl-oz soda can = 1.5 cups. A 20-fl-oz bottle = 2.5 cups. A 1-liter bottle = 33.8 fl oz = 4.23 cups. A 1.75-liter (handle) spirits bottle = 59.2 fl oz = 7.4 cups. A 750ml wine/spirits bottle = 25.4 fl oz = 3.17 cups. A half-gallon milk carton = 64 fl oz = 8 cups. A standard gallon milk jug = 128 fl oz = 16 cups. These conversions are useful for scaling large-batch recipes (party drinks, large-batch soup) where you need to know how many containers of a liquid ingredient to buy. The fluid-ounce hierarchy is one of the more useful practical math chains in the American kitchen: once you know 1 cup = 8 fl oz, all other conversions follow by doubling or halving.

¾ cup of butter equals 6 fluid ounces by volume and 6.00 weight ounces (170 grams, or 1.5 US butter sticks) by mass. Butter is nearly unique among common baking ingredients in that its fluid ounce and weight ounce values are approximately equal at almost every cup fraction: ¼ cup = 2 fl oz = 2.00 oz wt. ½ cup = 4 fl oz = 4.00 oz wt. ¾ cup = 6 fl oz = 6.00 oz wt. 1 cup = 8 fl oz = 8.01 oz wt. This near-equality happens because butter has a density very close to water (water = 8.35 oz per cup, butter = 8.01 oz per cup). For all practical purposes in US cooking: “X cups of butter” and “X × 8 oz of butter” are interchangeable, which is why US recipes can specify butter in either cups or ounces without ambiguity. ¾ cup of butter in US package terms = 1.5 sticks (since each stick = ½ cup = 4 oz = 113.5g). For a recipe requiring ¾ cup of butter: use 1 full stick plus half of a second stick. The wrapper on each US butter stick has markings at every tablespoon (each tablespoon = 14.2g = 0.5 oz), making it easy to cut precisely at the 6-tablespoon mark (halfway through the second stick) for the additional ½ stick = ¼ cup needed. See the Stick of Butter Converter for complete butter conversions between all US formats.

International bakers (particularly those in Europe, Australia, and the UK) who encounter US recipes face the cup-ounce system without the frame of reference that American home cooks grow up with. The most common confusion points: US cups are 240ml, not 250ml (the metric cup used in Australia, Canada, and New Zealand). A recipe calling for “2 cups of flour” intended for a 240ml cup produces slightly less flour than 2 cups measured in a 250ml metric cup: 2 x 240ml = 480ml vs 2 x 250ml = 500ml, approximately a 4 percent difference. For most recipes, this is negligible. For precision baking: convert everything to grams using the ingredient-specific gram values (available in our Cups to Grams Converter). US “oz” in baking contexts almost always means weight ounces: 8 oz of flour = 227g (note: this differs from the King Arthur standard of 120g per cup since 2 cups of flour = approximately 240g). A US recipe saying “4 oz of chocolate” means 113g of chocolate. Most professional bakers and US food media now include gram measurements alongside cup measurements for international accessibility; when both are available, always use the gram measurement as the authoritative quantity since it reflects what the recipe developer actually measured and tested.