Convert Cubic Inch to Cubic Foot
Convert cubic inches to cubic feet instantly. 1 cubic inch = 0.0005787037 cubic foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Foot to Cubic Inch converter for the reverse conversion.
Units explained
Cubic Inch
A cubic inch is the volume of a cube one inch on a side (16.387 mL).
Derived by cubing the international inch (25.4 mm).
Used for engine displacement and small-part volumes.
1959 yard agreement.
Cubic Foot
A cubic foot is the volume of a cube one foot on a side (28.3168 L).
Derived by cubing the international foot (0.3048 m).
Used for natural gas, refrigerators, shipping and HVAC.
1959 yard agreement.
Cubic Inch to Cubic Foot conversion formula
The relationship between cubic inches and cubic feet:
To convert cubic inches to cubic feet, multiply the value in cubic inches by 0.0005787037. To reverse, multiply cubic feet by 1728.
How to use this converter
Type a value into the calculator. The result in cubic feet updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Cubic Foot to Cubic Inch converter for the reverse direction.
Step-by-step: convert cubic inches to cubic feet
- Write down the value in cubic inches (in³).
- Multiply that value by the factor 0.0005787037.
- The product is the equivalent value in cubic feet (ft³).
- To reverse, multiply the cubic foot value by 1728.
Worked examples
Example 1 — Convert 1 in³ to ft³:
1 × 0.0005787037 = 0.0005787037 ft³
Example 2 — Convert 100 in³ to ft³:
100 × 0.0005787037 = 0.0578703704 ft³
Real-world example — Packaging gauge
A 4-cubic inch plastic bag thickness is a common spec for grocery and freezer bags. Converting from cubic inches to cubic feet is what packaging buyers do whenever they bridge US and metric supplier quotes.
4 in³ × 0.0005787037 = 0.0023148148 ft³
Real-world example — Plastic film and laminate thickness
A 500-cubic inch sheet is a typical spec for ID-card laminates and film overlays. Converting to cubic feet aligns the value with the unit most CAD systems and material datasheets prefer.
500 in³ × 0.0005787037 = 0.2893518519 ft³
Cubic Inch to Cubic Foot conversion table
Standard reference values for converting cubic inches to cubic feet:
| Cubic Inch [in³] | Cubic Foot [ft³] |
|---|---|
| 0.01 | 5.787037e-6 |
| 0.1 | 5.787037e-5 |
| 1 | 0.0005787037 |
| 2 | 0.0011574074 |
| 3 | 0.0017361111 |
| 4 | 0.0023148148 |
| 5 | 0.0028935185 |
| 10 | 0.005787037 |
| 20 | 0.0115740741 |
| 30 | 0.0173611111 |
| 40 | 0.0231481481 |
| 50 | 0.0289351852 |
| 100 | 0.0578703704 |
| 500 | 0.2893518519 |
| 1000 | 0.5787037037 |
Frequently asked questions
How many cubic feet is 1 cubic inch?
How do I convert cubic inches to cubic feet?
How do I convert cubic feet back to cubic inches?
How many cubic feet is 100 cubic inches?
Popular volume unit conversions
Convert Cubic Inch to other volume units
Show all Cubic Inch conversions
Metric / SI (8 units)
US Customary (Liquid) (8 units)
Imperial (UK) (4 units)
Cubic (length-derived) (2 units)
Cooking / Culinary (3 units)
Sources & references
Conversion factor (1 in³ = 0.0005787037 ft³) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.