Cubic Inch (in³) Conversion Calculator

Cubic Inch Conversion Calculator

Enter a value in cubic inches below to convert to another unit of volume.

Have a Question or Feedback?

Results:

What Is a Cubic Inch?

A cubic inch is a unit used to measure volume.

The cubic inch is a US customary and imperial unit of volume. A cubic inch is sometimes also referred to as a cubic in. Cubic inches can be abbreviated as in³, and are also sometimes abbreviated as cu inch, cu in, or CI. For example, 1 cubic inch can be written as 1 in³, 1 cu inch, 1 cu in, or 1 CI.

You can calculate volume using a cubic inches calculator if you have the dimensions of a space or object.

How Much Is a Cubic Inch?

A cubic inch is a unit of volume equal to the space consumed by a cube with sides that are one inch in all directions. One cubic inch is equivalent to about 16.387 cubic centimeters or 0.554 fluid ounces.^[1]

How to Convert Cubic Inches

To convert cubic inches to another unit of volume, you need to multiply the value by a conversion factor. A conversion factor is a numerical value used to change the units of a measurement without changing the value.^[2]

You can find the conversion factors for cubic inches in the conversion table below.

Then, multiply the volume measurement by the conversion factor to find the equivalent value in the desired unit of measurement.

cubic inches × conversion factor = result

You can also use a calculator, such as one of the converters below, for the conversion.

Cubic Inch Conversion Table

Common cubic inch values and equivalent imperial and metric volume measurements
cubic inches	gallons	quarts	pints	cups	fluid ounces	tablespoons	teaspoons	cubic feet	cubic yards	liters	milliliters	cubic centimeters	cubic meters
1 in³	0.004329 gal	0.017316 qt	0.034632 pt	0.069264 c	0.554113 fl oz	1.108225 tbsp	3.324675 tsp	0.000579 ft³	0.000021433 yd³	0.016387 L	16.387064 mL	16.387064 cm³	0.000016387 m³
2 in³	0.008658 gal	0.034632 qt	0.069264 pt	0.138528 c	1.108225 fl oz	2.21645 tbsp	6.649351 tsp	0.001157 ft³	0.000042867 yd³	0.032774 L	32.774128 mL	32.774128 cm³	0.000032774 m³
3 in³	0.012987 gal	0.051948 qt	0.103896 pt	0.207792 c	1.662338 fl oz	3.324675 tbsp	9.974026 tsp	0.001736 ft³	0.0000643 yd³	0.049161 L	49.161192 mL	49.161192 cm³	0.000049161 m³
4 in³	0.017316 gal	0.069264 qt	0.138528 pt	0.277056 c	2.21645 fl oz	4.4329 tbsp	13.298701 tsp	0.002315 ft³	0.000085734 yd³	0.065548 L	65.548256 mL	65.548256 cm³	0.000065548 m³
5 in³	0.021645 gal	0.08658 qt	0.17316 pt	0.34632 c	2.770563 fl oz	5.541126 tbsp	16.623377 tsp	0.002894 ft³	0.000107 yd³	0.081935 L	81.93532 mL	81.93532 cm³	0.000081935 m³
6 in³	0.025974 gal	0.103896 qt	0.207792 pt	0.415584 c	3.324675 fl oz	6.649351 tbsp	19.948052 tsp	0.003472 ft³	0.000129 yd³	0.098322 L	98.322384 mL	98.322384 cm³	0.000098322 m³
7 in³	0.030303 gal	0.121212 qt	0.242424 pt	0.484848 c	3.878788 fl oz	7.757576 tbsp	23.272727 tsp	0.004051 ft³	0.00015 yd³	0.114709 L	114.709448 mL	114.709448 cm³	0.000115 m³
8 in³	0.034632 gal	0.138528 qt	0.277056 pt	0.554113 c	4.4329 fl oz	8.865801 tbsp	26.597403 tsp	0.00463 ft³	0.000171 yd³	0.131097 L	131.096512 mL	131.096512 cm³	0.000131 m³
9 in³	0.038961 gal	0.155844 qt	0.311688 pt	0.623377 c	4.987013 fl oz	9.974026 tbsp	29.922078 tsp	0.005208 ft³	0.000193 yd³	0.147484 L	147.483576 mL	147.483576 cm³	0.000147 m³
10 in³	0.04329 gal	0.17316 qt	0.34632 pt	0.692641 c	5.541126 fl oz	11.082251 tbsp	33.246753 tsp	0.005787 ft³	0.000214 yd³	0.163871 L	163.87064 mL	163.87064 cm³	0.000164 m³
11 in³	0.047619 gal	0.190476 qt	0.380952 pt	0.761905 c	6.095238 fl oz	12.190476 tbsp	36.571429 tsp	0.006366 ft³	0.000236 yd³	0.180258 L	180.257704 mL	180.257704 cm³	0.00018 m³
12 in³	0.051948 gal	0.207792 qt	0.415584 pt	0.831169 c	6.649351 fl oz	13.298701 tbsp	39.896104 tsp	0.006944 ft³	0.000257 yd³	0.196645 L	196.644768 mL	196.644768 cm³	0.000197 m³
13 in³	0.056277 gal	0.225108 qt	0.450216 pt	0.900433 c	7.203463 fl oz	14.406926 tbsp	43.220779 tsp	0.007523 ft³	0.000279 yd³	0.213032 L	213.031832 mL	213.031832 cm³	0.000213 m³
14 in³	0.060606 gal	0.242424 qt	0.484848 pt	0.969697 c	7.757576 fl oz	15.515152 tbsp	46.545455 tsp	0.008102 ft³	0.0003 yd³	0.229419 L	229.418896 mL	229.418896 cm³	0.000229 m³
15 in³	0.064935 gal	0.25974 qt	0.519481 pt	1.038961 c	8.311688 fl oz	16.623377 tbsp	49.87013 tsp	0.008681 ft³	0.000322 yd³	0.245806 L	245.80596 mL	245.80596 cm³	0.000246 m³
16 in³	0.069264 gal	0.277056 qt	0.554113 pt	1.108225 c	8.865801 fl oz	17.731602 tbsp	53.194805 tsp	0.009259 ft³	0.000343 yd³	0.262193 L	262.193024 mL	262.193024 cm³	0.000262 m³
17 in³	0.073593 gal	0.294372 qt	0.588745 pt	1.177489 c	9.419913 fl oz	18.839827 tbsp	56.519481 tsp	0.009838 ft³	0.000364 yd³	0.27858 L	278.580088 mL	278.580088 cm³	0.000279 m³
18 in³	0.077922 gal	0.311688 qt	0.623377 pt	1.246753 c	9.974026 fl oz	19.948052 tbsp	59.844156 tsp	0.010417 ft³	0.000386 yd³	0.294967 L	294.967152 mL	294.967152 cm³	0.000295 m³
19 in³	0.082251 gal	0.329004 qt	0.658009 pt	1.316017 c	10.528139 fl oz	21.056277 tbsp	63.168831 tsp	0.010995 ft³	0.000407 yd³	0.311354 L	311.354216 mL	311.354216 cm³	0.000311 m³
20 in³	0.08658 gal	0.34632 qt	0.692641 pt	1.385281 c	11.082251 fl oz	22.164502 tbsp	66.493506 tsp	0.011574 ft³	0.000429 yd³	0.327741 L	327.74128 mL	327.74128 cm³	0.000328 m³

References

National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf

National Institute of Standards & Technology, Unit Conversion, https://www.nist.gov/pml/owm/metric-si/unit-conversion