Cubic Inches to Cup (US) Converter
Volume · unit-converter
Convert Cubic Inches to Cup (US) with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use liter-based factors (US fluid measures, imperial UK units, SI cubic meters).
Calculator
From: Cubic Inches (in3)
To: Cup (US) (cup)
About Cubic Inches
The cubic inch is the volume of a cube one inch on a side. Engine displacement in the US and small volumes in machining use cubic inches.
About Cup (US)
The US customary cup is 236.588 ml (half a US liquid pint). US baking recipes frequently measure dry and liquid ingredients in cups.
How to convert cubic inches to cups (us)
1 cubic inches is equal to 0.06926406926407 cup (us):
1 in3 = (0.016387064 L ÷ 0.2365882365 L) cup = 0.06926406926407 cup
Each cubic inches is defined as 0.016387064 L and each cup (us) as 0.2365882365 L, so one in3 equals 0.016387064 ÷ 0.2365882365 cup = 0.06926406926407 cup.
Let V(in3) be the numeric value of the same volume measured in Cubic Inches (in3), and V(cup) the value in Cup (US) (cup). Then:
V(cup) = V(in3) × (0.016387064 / 0.2365882365)
Equivalently, divide by how many in3 fit into one cup (liters per cup divided by liters per in3):
V(cup) = V(in3) ÷ 14.4375
Or: cup (us) = cubic inches ÷ 14.4375
Examples
Example #1: Convert 20 in3 to cup (us)
20 in3 = 20 in3 × (0.016387064/0.2365882365) cup = 1.3852813853 cup
20 in3 = 20 in3 ÷ 14.4375 = 1.3852813853 cup
Example #2: Convert 50 in3 to cup (us)
50 in3 = 50 in3 × (0.016387064/0.2365882365) cup = 3.4632034632 cup
50 in3 = 50 in3 ÷ 14.4375 = 3.4632034632 cup
Summary
To convert Cubic Inches to Cup (US), multiply the value in in3 by the ratio of liters per in3 divided by liters per cup. Equivalently: value_cup = value_in3 × (0.016387064 / 0.2365882365). Numerically, 1 in3 equals 0.06926406926406926 cup.
Relationship context
Both units are US customary fluid / volume in this tool’s grouping. Conversions use fixed liter equivalents, so factors are consistent for cooking, engineering, and cross-checking labels. The factor from Cubic Inches to Cup (US) is 6.926407e-2 (1 in3 = 0.06926406926406926 cup).
Conversion tables
| Cubic Inches (in3) | Cup (US) (cup) |
|---|---|
| 0.1 | 0.0069264069 |
| 1 | 0.0692640693 |
| 2 | 0.1385281385 |
| 3 | 0.2077922078 |
| 4 | 0.2770562771 |
| 5 | 0.3463203463 |
| 6 | 0.4155844156 |
| 7 | 0.4848484848 |
| 8 | 0.5541125541 |
| 9 | 0.6233766234 |
| Cubic Inches (in3) | Cup (US) (cup) |
|---|---|
| 10 | 0.6926406926 |
| 20 | 1.3852813853 |
| 30 | 2.0779220779 |
| 40 | 2.7705627706 |
| 50 | 3.4632034632 |
| 60 | 4.1558441558 |
| 70 | 4.8484848485 |
| 80 | 5.5411255411 |
| 90 | 6.2337662338 |
| 100 | 6.9264069264 |