Cup (US) to Fluid Ounce (UK) Converter

Volume Converter

40 units available

Decimals:

From

To

8.326742

1 cup = 8.326742 fl oz (UK)

Formula:

fl oz (UK) = cup × 8.3267418463

With your value: 1 cup = 8.32674185 fl oz (UK)

How big is that?

Everyday references on a logarithmic scale, all expressed in cup (us) so you can sanity-check the result.

Milk carton (1/2.4e+2 your value)0.00423 cup

Kitchen bucket (1/24 your value)0.0423 cup

Car fuel tank (1/4.7 your value)0.211 cup

Bathtub (1/1.2 your value)0.845 cup

Your value1.00 cup

Hot tub (6.3× your value)6.34 cup

Other Cup (US) to Fluid Ounce (UK) conversions

2 cup to fl oz (UK)3 cup to fl oz (UK)4 cup to fl oz (UK)5 cup to fl oz (UK)6 cup to fl oz (UK)7 cup to fl oz (UK)8 cup to fl oz (UK)

Cup (US) to Fluid Ounce (UK) Conversion Table

Cup (US) (cup)	Fluid Ounce (UK) (fl oz (UK))
0.5	4.163371
1	8.326742
2	16.653484
5	41.633709
10	83.267418
15	124.901128
20	166.534837
25	208.168546
50	416.337092
100	832.674185
250	2,081.685462
500	4,163.370923
1000	8,326.741846

Fluid Ounce (UK) to Cup (US) Conversion Table

Fluid Ounce (UK) (fl oz (UK))	Cup (US) (cup)
0.5	0.060047
1	0.120095
2	0.24019
5	0.600475
10	1.20095
15	1.801425
20	2.4019
25	3.002375
50	6.00475
100	12.009499
250	30.023748
500	60.047496
1000	120.094993

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Cup (US) (cup)

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Fluid Ounce (UK) (fl oz (UK))

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Cup (US) to Fluid Ounce (UK)

To convert from Cup (US) (cup) to Fluid Ounce (UK) (fl oz (UK)), multiply the value by 8.3267418463.

Formula: fl oz (UK) = cup × 8.3267418463

Reverse: cup = fl oz (UK) × 0.1200949926

Step-by-Step Example

Start with your value in Cup (US). For example: 5 cup
Multiply by the conversion factor: 5 x 8.3267418463
The result is: 41.633709 fl oz (UK)

About Cup (US)

The US cup equals approximately 236.6 mL and is a standard cooking measurement in the United States.

Common uses: baking, cooking, recipes.

About Fluid Ounce (UK)

The fluid ounce (uk) (fl oz (UK)) is a unit of volume and capacity. One fluid ounce (uk) equals 0.0284130625 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: volume calculations, engineering and science, education.

Frequently Asked Questions

How many Fluid Ounce (UK) are in 1 Cup (US)?

There are exactly 8.3267418463 Fluid Ounce (UK) in 1 Cup (US). This means the conversion factor from Cup (US) to Fluid Ounce (UK) is 8.3267418463.

What is the formula to convert Cup (US) to Fluid Ounce (UK)?

The formula to convert Cup (US) to Fluid Ounce (UK) is: fl oz (UK) = cup × 8.3267418463. For example, to convert 10 Cup (US) to Fluid Ounce (UK), you would multiply 10 by 8.3267418463.

What is a Cup (US)?