Cubic Feet to Cubic Inches Converter
Volume · unit-converter
Convert Cubic Feet to Cubic Inches 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 Feet (ft3)
To: Cubic Inches (in3)
About Cubic Feet
The cubic feet is the volume of a cube one feet on a side (about 28.3168 liters). HVAC, construction, and US freight sometimes use cubic feet.
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.
How to convert cubic feet to cubic inches
1 cubic feet is equal to 1728 cubic inches:
1 ft3 = (28.316846592 L ÷ 0.016387064 L) in3 = 1728 in3
Each cubic feet is defined as 28.316846592 L and each cubic inches as 0.016387064 L, so one ft3 equals 28.316846592 ÷ 0.016387064 in3 = 1728 in3.
Let V(ft3) be the numeric value of the same volume measured in Cubic Feet (ft3), and V(in3) the value in Cubic Inches (in3). Then:
V(in3) = V(ft3) × (28.316846592 / 0.016387064)
Equivalently, divide by how many ft3 fit into one in3 (liters per in3 divided by liters per ft3):
V(in3) = V(ft3) ÷ 0.0005787037037
Or: cubic inches = cubic feet ÷ 0.0005787037037
Examples
Example #1: Convert 20 ft3 to cubic inches
20 ft3 = 20 ft3 × (28.316846592/0.016387064) in3 = 34560 in3
20 ft3 = 20 ft3 ÷ 0.0005787037037 = 34560 in3
Example #2: Convert 50 ft3 to cubic inches
50 ft3 = 50 ft3 × (28.316846592/0.016387064) in3 = 86400 in3
50 ft3 = 50 ft3 ÷ 0.0005787037037 = 86400 in3
Summary
To convert Cubic Feet to Cubic Inches, multiply the value in ft3 by the ratio of liters per ft3 divided by liters per in3. Equivalently: value_in3 = value_ft3 × (28.316846592 / 0.016387064). Numerically, 1 ft3 equals 1728 in3.
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 Feet to Cubic Inches is 1.728000e+3 (1 ft3 = 1728 in3).
Conversion tables
| Cubic Feet (ft3) | Cubic Inches (in3) |
|---|---|
| 0.1 | 172.8 |
| 1 | 1,728 |
| 2 | 3,456 |
| 3 | 5,184 |
| 4 | 6,912 |
| 5 | 8,640 |
| 6 | 10,368 |
| 7 | 12,096 |
| 8 | 13,824 |
| 9 | 15,552 |
| Cubic Feet (ft3) | Cubic Inches (in3) |
|---|---|
| 10 | 17,280 |
| 20 | 34,560 |
| 30 | 51,840 |
| 40 | 69,120 |
| 50 | 86,400 |
| 60 | 103,680 |
| 70 | 120,960 |
| 80 | 138,240 |
| 90 | 155,520 |
| 100 | 172,800 |
Conversions outside the hub list
The grid on the category page lists hub units only. These pairs include at least one unit outside that hub set (same tools: formulas and tables on each page).
- cubic-ft to uk-gallonCubic Feet to Gallon (UK)
- cubic-ft to uk-quartCubic Feet to Quart (UK)
- cubic-ft to uk-pintCubic Feet to Pint (UK)
- cubic-ft to us-quartCubic Feet to Quart (US)
- cubic-ft to us-pintCubic Feet to Pint (US)
- cubic-ft to uk-cupCubic Feet to Cup (UK)
- cubic-ft to us-cupCubic Feet to Cup (US)
- cubic-ft to uk-fluid-ounceCubic Feet to Fluid Ounce (UK)
- cubic-ft to uk-tablespoonCubic Feet to Tablespoon (UK)
- cubic-ft to uk-teaspoonCubic Feet to Teaspoon (UK)
- uk-gallon to cubic-inchGallon (UK) to Cubic Inches
- uk-quart to cubic-inchQuart (UK) to Cubic Inches