Cups to Fluid Ounces Conversion Converter – How Many Liquid OZ in A Cup

The cups to fluid ounces converter facilitates the seamless transformation of liquid measurements between cup and fl oz i.e. 4 cup = 32 fl oz.

In the United States, both cups and fluid ounces are commonly used measurements in recipes and cooking instructions. A standard US cup equals 8 fluid ounces, making it a fundamental conversion to remember.

When following a British recipe that calls for 1.5 cups of milk in a cake batter, using a cups to fluid ounces converter would show that you need 12 fluid ounces of milk (1.5 × 8 = 12 fl oz).

Cups to Fluid Ounces Conversion

Cups Converted to	Fluid Ounces
1	8
2	16
3	24
4	32
5	40
6	48
7	56
8	64
9	72
10	80
11	88
12	96
13	104
14	112
15	120
16	128
17	136
18	144
19	152
20	160
21	168
22	176
23	184
24	192
25	200
26	208
27	216
28	224
29	232
30	240
31	248
32	256
33	264
34	272
35	280
36	288
37	296
38	304
39	312
40	320
41	328
42	336
43	344
44	352
45	360
46	368
47	376
48	384
49	392
50	400
51	408
52	416
53	424
54	432
55	440
56	448
57	456
58	464
59	472
60	480
61	488
62	496
63	504
64	512
65	520
66	528
67	536
68	544
69	552
70	560
71	568
72	576
73	584
74	592
75	600
76	608
77	616
78	624
79	632
80	640
81	648
82	656
83	664
84	672
85	680
86	688
87	696
88	704
89	712
90	720
91	728
92	736
93	744
94	752
95	760
96	768
97	776
98	784
99	792
100	800

Cups to Fluid Ounces Conversion Table

Cups	fl oz
1/8	1
1/4	2
1/3	2.67
1/2	4
2/3	5.33
3/4	6
1	8
1.25	10
1.5	12
1.75	14
2	16
2.25	18
2.5	20
2.75	22
3	24
3.25	26
3.5	28
3.75	30
4	32
4.5	36
5	40
5.5	44
6	48
6.5	52
7	56
7.5	60
8	64
8.5	68
9	72
9.5	76
10	80

Cups to Fluid Ounces Conversion Formula

Fluid Ounces = Cups × 8

To convert 2.5 cups to fluid ounces:

• Fluid Ounces = 2.5 cups × 8
• Fluid Ounces = 20 fl oz

Convert 2½ cups to fluid ounces

Convert mixed number to decimal: 2.5

Apply formula: 2.5 × 8

Calculate: 2.5 × 8 = 20

Result: 2½ cups = 20 fluid ounces

Convert ¼ cup to fluid ounces

Convert fraction to decimal: 0.25

Apply formula: 0.25 × 8

Calculate: 0.25 × 8 = 2

Result: ¼ cup = 2 fluid ounces

How to Convert Cups to Fluid Ounces?

• Identify the number of cups you need to convert i.e. 4 cups
• Multiply the number of cups by 8 (the conversion factor)
• Express the result in fluid ounces (fl oz)

Let’s convert 3.75 cups to fluid ounces:

Starting value: 3.75 cups

Multiplication: 3.75 × 8 = 30

Final result: 3.75 cups = 30 fluid ounces

Convert 6¾ cups to fluid ounces

Convert mixed number to decimal: 6.75

Apply formula: 6.75 × 8

Calculate: 6.75 × 8 = 54

Result: 6¾ cups = 54 fluid ounces

What is Fluid Ounces?

A fluid ounce (fl oz) is a unit of volume measurement commonly used in the United States and some other countries to measure liquid substances.

• US Fluid Ounce = 29.5735 milliliters
• Imperial Fluid Ounce = 28.4131 milliliters

Fluid Ounces	Equivalent Measurement
1 fl oz	29.5735 ml
8 fl oz	1 cup
16 fl oz	1 pint
32 fl oz	1 quart
128 fl oz	1 gallon

References:

• National Institute of Standards and Technology (NIST): https://www.nist.gov/pml/weights-and-measures
• FDA Guide to Food Labeling: https://www.fda.gov/food/food-labeling-nutrition
• USDA Food Safety and Inspection Service: https://www.fsis.usda.gov/food-safety

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