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Specific Properties

in³/lbtoft³/lb

Convert cubic inches per pound (in³/lb) to cubic feet per pound (ft³/lb).

Factor1 in³/lb = 0.0005787037 ft³/lb

Converter

in³/lb

Accepts numbers or expressions, e.g. 150 + 14.7

Result
0.578704ft³/lb

Rendered to 6 significant figures.

Formula

Formula
ft³/lb = in³/lb × 0.0005787037

Multiply any value in cubic inches per pound by 0.0005787037 to obtain the value in cubic feet per pound.

Worked example

Convert 1000 in³/lb to ft³/lb.

  1. 01Start with 1000 in³/lb.
  2. 02Multiply by the conversion factor: 1000 × 0.0005787037 = 0.578704 ft³/lb.
Result1000 in³/lb = 0.578704 ft³/lb

Conversion table

in³/lbft³/lb
10.0005787
20.0011574
50.0028935
100.005787
200.011574
500.028935
1000.05787
2000.11574
5000.28935
10000.5787

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from in³/lb to ft³/lb?
1 in³/lb equals 0.0005787037 ft³/lb. To convert, multiply the value in cubic inches per pound by 0.0005787037.
How do I convert 1 in³/lb to ft³/lb?
1 in³/lb = 0.000578704 ft³/lb. For any value, multiply by 0.0005787037.
How do I convert ft³/lb back to in³/lb?
Divide by the same factor — or equivalently, multiply by 1728. So 1 ft³/lb = 1728 in³/lb.
When would I need to convert cubic inch per pound to cubic foot per pound?
Specific-volume conversions between in³/lb and ft³/lb arise in steam-table lookups, compressible-flow analysis, and thermodynamic state-point work. Specific volume is the reciprocal of density and must not be confused with it — m³/kg and ft³/lb appear directly in property tables and equation-of-state solvers.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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