Cubic Inches to Cups Conversion (in³ to c)

Cubic Inches to Cups Converter

Enter the volume in cubic inches below to convert it to cups.

Result in Cups:

1 in³ = 0.069264 c
1 in³ ≈ 1/16 c

How to Convert Cubic Inches to Cups

To convert a measurement in cubic inches to a measurement in cups, multiply the volume by the following conversion ratio: 0.069264 cups/cubic inch.

Since one cubic inch is equal to 0.069264 cups, you can use this simple formula to convert:

cups = cubic inches × 0.069264

The volume in cups is equal to the volume in cubic inches multiplied by 0.069264.

For example, here's how to convert 5 cubic inches to cups using the formula above.

cups = (5 in³ × 0.069264) = 0.34632 c

Cubic inches and cups are both units used to measure volume. Keep reading to learn more about each unit of measure.

What 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]

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.

Learn more about cubic inches.

What Is a Cup?

The cup is a unit of volume equal to 16 tablespoons or 8 fluid ounces. The cup should not be confused with the metric cup or the teacup, which are different units of volume.

One standard cup is equal to 236.588 milliliters, but for nutrition labeling, one cup is defined as 240 milliliters.^[2] To further confuse things, a metric cup is equal to 250 mL, while in Japan, a cup is equivalent to only 200 mL.

The cup is a US customary unit of volume. Cups can be abbreviated as c, and are also sometimes abbreviated as C. For example, 1 cup can be written as 1 c or 1 C.

Learn more about cups.

Cubic Inch to Cup Conversion Table

Table showing various cubic inch measurements converted to cups.
Cubic Inches	Cups
1 in³	0.069264 c
2 in³	0.138528 c
3 in³	0.207792 c
4 in³	0.277056 c
5 in³	0.34632 c
6 in³	0.415584 c
7 in³	0.484848 c
8 in³	0.554113 c
9 in³	0.623377 c
10 in³	0.692641 c
11 in³	0.761905 c
12 in³	0.831169 c
13 in³	0.900433 c
14 in³	0.969697 c
15 in³	1.039 c
16 in³	1.1082 c
17 in³	1.1775 c
18 in³	1.2468 c
19 in³	1.316 c
20 in³	1.3853 c
21 in³	1.4545 c
22 in³	1.5238 c
23 in³	1.5931 c
24 in³	1.6623 c
25 in³	1.7316 c
26 in³	1.8009 c
27 in³	1.8701 c
28 in³	1.9394 c
29 in³	2.0087 c
30 in³	2.0779 c
31 in³	2.1472 c
32 in³	2.2165 c
33 in³	2.2857 c
34 in³	2.355 c
35 in³	2.4242 c
36 in³	2.4935 c
37 in³	2.5628 c
38 in³	2.632 c
39 in³	2.7013 c
40 in³	2.7706 c

Table showing various cubic inch measurements converted to cups.

Cubic Inches

Cups

1 in³

0.069264 c

2 in³

0.138528 c

3 in³

0.207792 c

4 in³

0.277056 c

5 in³

0.34632 c

6 in³

0.415584 c

7 in³

0.484848 c

8 in³

0.554113 c

9 in³

0.623377 c

10 in³

0.692641 c

11 in³

0.761905 c

12 in³

0.831169 c

13 in³

0.900433 c

14 in³

0.969697 c

15 in³

1.039 c

16 in³

1.1082 c

17 in³

1.1775 c

18 in³

1.2468 c

19 in³

1.316 c

20 in³

1.3853 c

21 in³

1.4545 c

22 in³

1.5238 c

23 in³

1.5931 c

24 in³

1.6623 c

25 in³

1.7316 c

26 in³

1.8009 c

27 in³

1.8701 c

28 in³

1.9394 c

29 in³

2.0087 c

30 in³

2.0779 c

31 in³

2.1472 c

32 in³

2.2165 c

33 in³

2.2857 c

34 in³

2.355 c

35 in³

2.4242 c

36 in³

2.4935 c

37 in³

2.5628 c

38 in³

2.632 c

39 in³

2.7013 c

40 in³

2.7706 c

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
U.S. Food & Drug Administration, Guidance for Industry: Guidelines for Determining Metric Equivalents of Household Measures, https://www.fda.gov/regulatory-information/search-fda-guidance-documents/guidance-industry-guidelines-determining-metric-equivalents-household-measures