Ounces to Cups Converter — 8 oz = 1 Cup [Free Chart + Dry!]

Ounces to Cups Converter

Convert oz to cups instantly — for liquids by fluid ounce and for dry ingredients by weight, with the exact cup fraction for your recipe.

Liquid or Dry Ingredient

Amount in Ounces (oz)

Choose liquid or your dry ingredient, then enter the ounces — your result in cups appears here instantly.

Note: fluid ounces measure volume (8 fl oz = 1 cup), but dry ounces measure weight — so dry results need an ingredient. Pick your ingredient above and the converter uses its true ounces per cup.

How to Use This Ounces to Cups Converter

Choose liquid or your ingredient. Pick Liquid — Fluid Ounces for drinks, milk, water and oils measured by volume, or pick a dry ingredient for flour, sugar, butter and other foods weighed in ounces.
Enter the ounces. Type a decimal like 12.5 or a fraction like 1/2 — the result appears as you type, with no button to press.
Read the result. You get decimal cups, the nearest cup fraction you can actually measure, plus milliliters and tablespoons for liquids or grams and tablespoons for dry ingredients.
Copy it if you need it. Tap Copy Result and paste the conversion straight into your recipe notes.

Quick Answers: Ounces to Cups at a Glance

These cards answer the conversions people search for most. Every card shows the liquid answer first, then the dry answers for flour, sugar and butter — because oz to cups gives a different answer for each one.

4 oz to Cups

Liquid: 0.5 cups (1/2)
Flour (dry): 0.907 cups
Sugar (dry): 0.567 cups
Butter (dry): 0.5 cups

6 oz to Cups

Liquid: 0.75 cups (3/4)
Flour (dry): 1.361 cups
Sugar (dry): 0.85 cups
Butter (dry): 0.749 cups

8 oz to Cups

Liquid: 1 cups (1)
Flour (dry): 1.814 cups
Sugar (dry): 1.134 cups
Butter (dry): 0.999 cups

10 oz to Cups

Liquid: 1.25 cups (1 1/4)
Flour (dry): 2.268 cups
Sugar (dry): 1.417 cups
Butter (dry): 1.249 cups

12 oz to Cups

Liquid: 1.5 cups (1 1/2)
Flour (dry): 2.722 cups
Sugar (dry): 1.701 cups
Butter (dry): 1.499 cups

16 oz to Cups

Liquid: 2 cups (2)
Flour (dry): 3.629 cups
Sugar (dry): 2.268 cups
Butter (dry): 1.998 cups

30 oz to Cups

Liquid: 3.75 cups (3 3/4)
Flour (dry): 6.804 cups
Sugar (dry): 4.252 cups
Butter (dry): 3.747 cups

32 oz to Cups

Liquid: 4 cups (4)
Flour (dry): 7.257 cups
Sugar (dry): 4.536 cups
Butter (dry): 3.996 cups

40 oz to Cups

Liquid: 5 cups (5)
Flour (dry): 9.072 cups
Sugar (dry): 5.67 cups
Butter (dry): 4.996 cups

48 oz to Cups

Liquid: 6 cups (6)
Flour (dry): 10.886 cups
Sugar (dry): 6.804 cups
Butter (dry): 5.995 cups

64 oz to Cups

Liquid: 8 cups (8)
Flour (dry): 14.515 cups
Sugar (dry): 9.072 cups
Butter (dry): 7.993 cups

160 oz to Cups

Liquid: 20 cups (20)
Flour (dry): 36.287 cups
Sugar (dry): 22.68 cups
Butter (dry): 19.982 cups

Learn the three anchors and most recipes get easy: 8 oz = 1 cup for liquids, 16 oz = 2 cups (one pint), and 32 oz = 4 cups (one quart). Shoppers also ask how many cups is 160 oz — as a liquid that is 20 cups, or 1.25 gallons, the size of a large party drink dispenser batch. And when a recipe asks for 30 ounces to cups, you need 3.75 cups of liquid.

Fluid Ounces to Cups Conversion Chart

Use this fl oz to cups chart for every liquid: water, milk, juice, stock, cream and oil measured in a jug. The rule never changes — divide fluid ounces by 8. Tap any cups cell and the converter loads that amount for you.

Fluid Ounces	Cups	Approx. Fraction	Tablespoons	Milliliters
1 fl oz	0.125	1/8	2	29.6
2 fl oz	0.25	1/4	4	59.1
3 fl oz	0.375	3/8	6	88.7
4 fl oz	0.5	1/2	8	118.3
5 fl oz	0.625	5/8	10	147.9
6 fl oz	0.75	3/4	12	177.4
7 fl oz	0.875	7/8	14	207
8 fl oz	1	1	16	236.6
10 fl oz	1.25	1 1/4	20	295.7
12 fl oz	1.5	1 1/2	24	354.9
16 fl oz	2	2	32	473.2
20 fl oz	2.5	2 1/2	40	591.5
24 fl oz	3	3	48	709.8
30 fl oz	3.75	3 3/4	60	887.2
32 fl oz	4	4	64	946.4
40 fl oz	5	5	80	1182.9
48 fl oz	6	6	96	1419.5
64 fl oz	8	8	128	1892.7
80 fl oz	10	10	160	2365.9
96 fl oz	12	12	192	2839.1
128 fl oz	16	16	256	3785.4
160 fl oz	20	20	320	4731.8

The chart covers the full kitchen range, from 1 fl oz (1/8 cup, a shot of vanilla or lemon juice) to 160 fl oz. It also settles 48 oz to cups in one glance: 48 fl oz = 6 cups. Keep the reverse rule beside it — for cups to oz, multiply cups by 8, so 2 cups = 16 fl oz and 4 cups = 32 fl oz.

Cups to Ounces Landmarks

Whole and fraction cups come up constantly in American recipes, so this reverse chart converts cups to ounces in both senses: fluid ounces by volume, and dry ounces by weight for flour and sugar. It answers how many ounces is 1/4 cup (2 fl oz) and every other standard cup fraction.

Cups	Fluid Ounces	Tablespoons	Milliliters	Flour (dry oz)	Sugar (dry oz)
1/4 cup	2 fl oz	4	59.1	1.1	1.76
1/3 cup	2.67 fl oz	5.3	78.9	1.47	2.35
1/2 cup	4 fl oz	8	118.3	2.2	3.53
2/3 cup	5.33 fl oz	10.7	157.7	2.94	4.7
3/4 cup	6 fl oz	12	177.4	3.31	5.29
1 cup	8 fl oz	16	236.6	4.41	7.05
1 1/2 cups	12 fl oz	24	354.9	6.61	10.58
2 cups	16 fl oz	32	473.2	8.82	14.11
3 cups	24 fl oz	48	709.8	13.23	21.16
4 cups	32 fl oz	64	946.4	17.64	28.22

Ounces to Cups Dry Conversion Chart

Dry ounces measure weight, and a cup measures volume, so oz to cups dry always runs through the ingredient. This chart converts 1 to 20 dry ounces for five staples. Tap any cell to load that exact ingredient and amount in the converter.

Dry Ounces	All-Purpose Flour	Granulated Sugar	Butter	Powdered Sugar	Rolled Oats
1 oz	0.227	0.142	0.125	0.236	0.315
2 oz	0.454	0.283	0.25	0.472	0.63
3 oz	0.68	0.425	0.375	0.709	0.945
4 oz	0.907	0.567	0.5	0.945	1.26
5 oz	1.134	0.709	0.624	1.181	1.575
6 oz	1.361	0.85	0.749	1.417	1.89
7 oz	1.588	0.992	0.874	1.654	2.205
8 oz	1.814	1.134	0.999	1.89	2.52
10 oz	2.268	1.417	1.249	2.362	3.15
12 oz	2.722	1.701	1.499	2.835	3.78
14 oz	3.175	1.984	1.748	3.307	4.41
16 oz	3.629	2.268	1.998	3.78	5.04
20 oz	4.536	2.835	2.498	4.725	6.3

Read two rows slowly and the pattern clicks. For 4 oz to cups dry, flour gives about 0.91 cups, sugar gives about 0.57 cups and butter gives exactly 1/2 cup. For 6 oz to cups dry, flour gives about 1.36 cups, sugar gives about 0.85 cups and butter gives 3/4 cup. The same weight fills wildly different cups because flour traps air and sugar packs dense — that gap is exactly why a single dry conversion number never works.

Butter Sticks to Ounces and Cups

Butter is the friendly exception in dry conversions: one US stick weighs exactly 4 oz and measures exactly 1/2 cup, so butter converts cleanly in both directions.

Butter	Ounces	Cups	Grams	Tablespoons
0.5 sticks	2 oz	1/4 cup	56.7	4
1 stick	4 oz	1/2 cup	113.4	8
1.5 sticks	6 oz	3/4 cup	170.1	12
2 sticks	8 oz	1 cup	226.8	16
3 sticks	12 oz	1 1/2 cup	340.2	24
4 sticks	16 oz	2 cup	453.6	32

That is why recipes swap so freely between sticks, ounces and cups for butter: 1 stick = 4 oz = 1/2 cup = 8 tablespoons = about 113 grams. European recipes that list 250 grams of butter mean about 2.2 sticks, or just over 1 cup.

Why Use This Ounces to Cups Converter

It handles both kinds of ounce in one box. Most tools force you to choose between a fluid tool and a dry tool. Here one select covers fl oz to cups for liquids and oz to cups dry for 41 weighed ingredients.
It converts dry ounces by ingredient, not by guesswork. Every dry ingredient carries a verified ounces-per-cup value derived from the same grams-per-cup dataset as our Grams to Cups converter, cross-checked against King Arthur Baking, USDA and FAO data.
It shows fractions you can measure. You get 1 1/2 cups, not just 1.5, plus tablespoons, milliliters and grams — the units your measuring cups, spoons and scale actually show.
It shows its working. Every result prints the exact division behind it, so you can trust the number and check it yourself.
It is instant and free. No sign-up, no button, no waiting — the tool sits at the top of the page and answers as you type on any phone, tablet or computer.

Who Is This Converter For?

Home bakers: your recipe says 8 oz of flour or a 12 oz can of tomatoes — convert ounces to cups and keep baking without breaking your flow.
Cooks following American recipes abroad: turn cup measures into the ounces on your kitchen scale, and turn package ounces back into cups.
Meal preppers and macro trackers: food packages list ounces while portion containers and recipes use cups — convert between them in seconds.
Baristas, bartenders and drink makers: scale batch drinks fast — a 48 oz pitcher is 6 cups, and a 160 oz dispenser is 20 cups.
Students and new cooks: learn the difference between a fluid ounce and a dry ounce once, with the formula printed on every result.
Small bakeries and cafes: convert bulk package weights into cup measures for test batches before you commit to a full run.

Ounces to Cups: The Complete Guide

Ounces to cups looks like one conversion, but it hides two completely different conversions that share a name. A fluid ounce measures volume — space. A dry ounce measures weight — heaviness. A cup measures volume too, which makes the liquid conversion beautifully simple and the dry conversion entirely dependent on what you put in the cup. Master that one distinction and you will never ruin a recipe with the wrong ounce again.

What Is an Ounce?

An ounce (oz) is a US customary and imperial unit equal to 1/16 of a pound, or exactly 28.349523125 grams. Recipes use it for weighed ingredients: 8 oz of chocolate, 12 oz of pasta, 4 oz of cheese. Do not confuse it with the troy ounce (31.1 grams), which jewelers use for precious metals and which never belongs in a kitchen. The fluid ounce (fl oz) is a different unit altogether: it measures volume, equals 1/8 of a cup, and holds about 29.5735 milliliters. US nutrition labels round 1 fl oz to 30 milliliters. Packaging keeps the two apart with the letters “fl” — when a bottle says 16 fl oz it promises volume, and when a package says 16 oz it promises weight.

What Is a Cup?

A cup is a unit of volume equal to 16 tablespoons, 48 teaspoons or 8 fluid ounces. The standard US customary cup holds 236.588 milliliters. The US legal cup, which the FDA uses for nutrition labeling, holds 240 milliliters. Outside the United States the cup changes size: a metric cup holds 250 milliliters, an imperial (UK) cup holds about 284.131 milliliters, and a Japanese cup holds 200 milliliters and still appears in rice and sake measures. A coffee cup is smaller still at about 118 milliliters. All conversions on this page use the standard US cup unless a section says otherwise.

The Ounces to Cups Formula

For liquids the formula is one step: cups = fluid ounces ÷ 8. So 24 fl oz ÷ 8 = 3 cups. For dry ingredients the formula is: cups = ounces ÷ ounces per cup for that ingredient. Flour weighs about 4.41 oz per cup, so 10 oz of flour ÷ 4.41 = about 2.27 cups. When a source gives density in grams per milliliter instead, use the density form: cups = ounces ÷ (8.3454 × density). For example, 5 oz of an ingredient with a density of 0.7 g/mL gives 5 ÷ (8.3454 × 0.7) = about 0.856 cups. This converter runs whichever form fits the option you pick and prints the division on every result.

Why Density Changes Every Dry Conversion

Density decides how much weight fits into one cup of space. Flour particles are fine and trap air, so a cup of flour weighs only about 4.41 oz. Granulated sugar crystals pack tighter, so a cup weighs about 7.05 oz. Honey pours with no air at all, so a cup weighs about 12 oz. Rolled oats trap the most air of all and weigh only about 3.17 oz per cup. That is why asking “how many cups is 10 oz dry?” without naming the food has no honest single answer — 10 oz means 2.27 cups of flour, 1.42 cups of sugar, 1.25 cups of butter or 3.15 cups of oats.

A Cup Does Not Always Equal a Cup

Cup size shifts the answer too. Convert 40 fl oz with a US customary cup and you get 5 cups. Measure the same liquid with a metric cup (250 ml instead of 236.588 ml) and you pour about 4.73 metric cups. Use an imperial cup and you pour about 4.17 cups. The gap looks small per cup and grows fast across a batch: a five-cup recipe measured with the wrong cup system drifts by more than a quarter cup of liquid. Match the cup to the recipe’s country of origin — American recipes mean the US cup, Australian recipes mean the metric cup, and older British recipes may mean the imperial cup.

The Water Nuance: 8 fl oz of Water Does Not Weigh 8 oz

Water creates the most common ounce confusion. One US cup of water measures 8 fl oz by volume, but it weighs about 8.35 oz on a scale (236.6 grams), because a fluid ounce of water weighs slightly more than one dry ounce. So 8 oz of water by weight fills only about 0.96 cups. The old saying “a pint’s a pound the world around” is a handy memory aid, not an exact fact — a US pint of water weighs about 1.04 pounds. For milk, juice and other water-based liquids the difference stays small, but for oils it reverses: oil is lighter than water, so 8 fl oz of olive oil weighs only about 7.6 oz.

When to Convert Ounces to Cups

Convert ounces to cups whenever a recipe and your tools speak different languages: a package lists 10 oz of chocolate chips while the recipe wants cups; a drink recipe scales from a 12 oz serving to a 48 oz pitcher; a meal-prep plan lists ounces while your containers show cups; or your scale battery dies mid-recipe and the measuring cups take over. Converting also helps you shop — knowing that a 16 oz (1 lb) bag of flour holds about 3.63 cups tells you instantly whether one bag covers a recipe that needs 3 cups.

How to Measure Dry Ingredients Accurately

Technique matters as much as maths. For flour and cocoa, use the spoon-and-level method: fluff the ingredient, spoon it loosely into the cup, then sweep a knife across the top. Scooping straight from the bag packs in up to 20 percent extra flour. Pack brown sugar firmly, as recipes intend. Weigh with a kitchen scale whenever you can — a scale removes density and technique errors at once, and professional bakers weigh for exactly that reason, as NIST culinary guidance recommends. When no scale is available, this converter gives you the best volume estimate, and the charts above keep the staple ingredients one tap away.

Common Ounces to Cups Mistakes

Using the liquid rule for dry food. Dividing flour ounces by 8 gives 1 cup for 8 oz of flour — nearly double the true 1.81 cups. Always convert dry ounces by ingredient.
Trusting “8 oz = 1 cup” for everything. That shortcut only works for fluid ounces, butter and water-like liquids by volume. It fails for flour, oats, cocoa and sugar.
Ignoring the cup system. A metric cup holds about 6 percent more than a US cup, and an imperial cup holds about 20 percent more.
Scooping flour. A scooped cup can weigh 140 grams or more against the standard 125 grams, drying out cakes and doughs.
Reading a liquid jug from above. Set the jug on the counter and read the line at eye level, or you steal or add tablespoons without noticing.

Ounces to Cups in Real Recipes

Real cooking shows both conversions working side by side. A pancake batter for a crowd uses 16 fl oz (2 cups) of milk, 10 oz of flour by weight (about 2.27 cups), and 4 oz of butter (1/2 cup, one stick). A party lemonade scales a 12 oz concentrate can into 48 oz of finished drink — 6 cups. A bakery test batch weighs 16 oz of sugar (about 2.27 cups) against 30 ounces to cups of liquid at 3.75 cups. Convert each ingredient with its own rule and the recipe holds together; convert them all with one shortcut and it does not.

Frequently Asked Questions

How many oz are in a cup?

There are 8 fluid ounces in 1 US cup, so the fl oz to cups rule is simple: divide by 8. One cup also holds 16 tablespoons and 236.588 milliliters. For dry ingredients weighed in ounces, the answer changes by ingredient: 1 cup of all-purpose flour weighs about 4.41 oz, 1 cup of granulated sugar weighs about 7.05 oz, and 1 cup of butter weighs about 8.01 oz.

How many ounces is 1/4 cup?

1/4 cup equals 2 fluid ounces for liquids, which is also 4 tablespoons or about 59 milliliters. By weight, 1/4 cup of all-purpose flour weighs about 1.1 oz, 1/4 cup of granulated sugar weighs about 1.76 oz, and 1/4 cup of butter weighs 2 oz, which is half a US butter stick.

How do I convert ounces to cups?

For liquids, divide fluid ounces by 8: cups = fl oz / 8, so 30 ounces to cups is 30 / 8 = 3.75 cups. For dry ounces by weight, divide by the ingredient’s ounces per cup: cups = oz / oz per cup. This ounces to cups converter does both — pick Liquid for volume or your dry ingredient for weight, then enter the ounces.

How much is 12 oz in cups?

How much is 12 oz in cups depends on the kind of ounce. As a liquid, 12 fl oz equals 1.5 cups. By dry weight, 12 oz of all-purpose flour equals about 2.72 cups, 12 oz of granulated sugar equals about 1.7 cups, and 12 oz of butter equals about 1.5 cups. Choose the right row in the converter above and it applies the right rule for you.

How much is 40 oz in cups?

How much is 40 oz in cups? As a liquid, 40 fl oz equals exactly 5 cups, which is 2.5 pints. By dry weight, 40 oz of flour equals about 9.07 cups and 40 oz of granulated sugar equals about 5.67 cups, because flour packs far less weight into each cup than sugar does.

How many cups is 10 oz dry?

How many cups is 10 oz dry depends on the ingredient: 10 oz of all-purpose flour equals about 2.27 cups, 10 oz of granulated sugar equals about 1.42 cups, 10 oz of butter equals about 1.25 cups, and 10 oz of rolled oats equals about 3.15 cups. Always convert oz to cups dry by ingredient, never with the liquid divide-by-8 rule.

How many cups is 16 oz dry?

How many cups is 16 oz dry? For flour it is about 3.63 cups, for granulated sugar about 2.27 cups, and for butter almost exactly 2 cups, because 1 cup of butter weighs about 8 oz. For liquids the same 16 fl oz also equals 2 cups, which is 1 pint — a happy coincidence that only holds for butter and water-like liquids.

How do I convert cups to oz and cups to ounces?

Reverse the maths. For cups to oz with liquids, multiply cups by 8: 2 cups = 16 fl oz, 3 cups = 24 fl oz, and 48 oz to cups reversed means 6 cups x 8 = 48 fl oz. For cups to ounces by dry weight, multiply cups by the ingredient’s ounces per cup — 2 cups of flour weigh about 8.82 oz, while 2 cups of sugar weigh about 14.11 oz.

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