Cubic Inch to Fluid Ounce (US) Converter

Volume Converter

40 units available

Decimals:

From

To

0.554113

1 in³ = 0.554113 fl oz

Formula:

fl oz = in³ × 0.5541125541

With your value: 1 in³ = 0.55411255 fl oz

How big is that?

Everyday references on a logarithmic scale, all expressed in cubic inch so you can sanity-check the result.

Soda can (1/50 your value)0.0201 in³

Milk carton (1/16 your value)0.0610 in³

Kitchen bucket (1/1.6 your value)0.610 in³

Your value1.00 in³

Car fuel tank (3.1× your value)3.05 in³

Bathtub (12× your value)12.2 in³

Other Cubic Inch to Fluid Ounce (US) conversions

2 in³ to fl oz 3 in³ to fl oz 4 in³ to fl oz 5 in³ to fl oz 6 in³ to fl oz 7 in³ to fl oz 8 in³ to fl oz

Cubic Inch to Fluid Ounce (US) Conversion Table

Cubic Inch (in³)	Fluid Ounce (US) (fl oz)
0.5	0.277056
1	0.554113
2	1.108225
5	2.770563
10	5.541126
15	8.311688
20	11.082251
25	13.852814
50	27.705628
100	55.411255
250	138.528139
500	277.056277
1000	554.112554

Fluid Ounce (US) to Cubic Inch Conversion Table

Fluid Ounce (US) (fl oz)	Cubic Inch (in³)
0.5	0.902344
1	1.804688
2	3.609375
5	9.023438
10	18.046875
15	27.070313
20	36.09375
25	45.117188
50	90.234375
100	180.46875
250	451.171875
500	902.34375
1000	1,804.6875

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.

Cubic Inch (in³)

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 (US) (fl oz)

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 Cubic Inch to Fluid Ounce (US)

To convert from Cubic Inch (in³) to Fluid Ounce (US) (fl oz), multiply the value by 0.5541125541.

Formula: fl oz = in³ × 0.5541125541

Reverse: in³ = fl oz × 1.8046875

Step-by-Step Example

Start with your value in Cubic Inch. For example: 5 in³
Multiply by the conversion factor: 5 x 0.5541125541
The result is: 2.770563 fl oz

About Cubic Inch

The cubic inch (in³) is a unit of volume and capacity. One cubic inch equals 0.016387064 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.

About Fluid Ounce (US)

The US fluid ounce equals approximately 29.57 mL. It is commonly used for beverage and liquid measurements.

Common uses: beverages, cooking, cocktails.

Frequently Asked Questions

How many Fluid Ounce (US) are in 1 Cubic Inch?

There are exactly 0.5541125541 Fluid Ounce (US) in 1 Cubic Inch. This means the conversion factor from Cubic Inch to Fluid Ounce (US) is 0.5541125541.

What is the formula to convert Cubic Inch to Fluid Ounce (US)?

The formula to convert Cubic Inch to Fluid Ounce (US) is: fl oz = in³ × 0.5541125541. For example, to convert 10 Cubic Inch to Fluid Ounce (US), you would multiply 10 by 0.5541125541.

What is a Cubic Inch?