Cubic Volume (ft³) Calculator

Enter length, width, and height in any unit. Results update instantly.

ft³
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Step-by-step derivation

  1. Convert each dimension to meters (m) according to the selected unit.
  2. Compute volume in cubic meters: Vₘ³ = Lₘ × Wₘ × Hₘ.
  3. Convert to cubic feet: V_ft³ = Vₘ³ ÷ 0.028316846592 (since 1 ft³ = 0.028316846592 m³).
  4. Populate other units using exact metric/imperial relationships listed below.

Live substitution appears here when values are entered.

References

  • Exact definitions: 1 in = 0.0254 m; 1 ft = 0.3048 m; 1 yd = 0.9144 m; 1 mi = 1609.344 m; 1 nmi = 1852 m.
  • 1 ft³ = 0.028316846592 m³; 1 yd³ = 27 ft³; 1 in³ = 1/1728 ft³.
  • Metric volume: 1 L = 1 dm³ = 1000 cm³; 1 m³ = 1000 L.
  • US: 1 gal = 3.785411784 L; 1 qt = 0.946352946 L; 1 pt = 0.473176473 L; 1 cup = 236.5882365 mL; 1 fl oz = 29.5735295625 mL.
  • UK (Imperial): 1 gal = 4.54609 L; 1 qt = 1.1365225 L; 1 pt = 0.56826125 L; 1 fl oz = 28.4130625 mL.

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