Cubic Feet to Pounds Calculator
Convert volume (ft³) to weight (lbs) using material density for accurate mass calculations
Volume to Mass Conversion Calculator
Selected: Water(62.43 lb/ft³)
Volume of material in cubic feet
Weight of material in pounds
Conversion Results
Conversion Formula: Weight (lbs) = Volume (ft³) × Density (lb/ft³)
Calculation: 0.000 ft³ × 62.43 lb/ft³ = 0.00 lbs
Material: Water (62.43 lb/ft³)
Common Volume Conversions
Example Calculations
Converting 5 ft³ of Water to Pounds
Given: 5 cubic feet of water
Density of water: 62.43 lb/ft³
Formula: Weight = Volume × Density
Calculation: 5 ft³ × 62.43 lb/ft³ = 312.15 lbs
Result: 5 ft³ of water weighs 312.15 pounds
Converting 500 lbs of Concrete to ft³
Given: 500 pounds of concrete
Density of concrete: 149.83 lb/ft³
Formula: Volume = Weight ÷ Density
Calculation: 500 lbs ÷ 149.83 lb/ft³ = 3.34 ft³
Result: 500 lbs of concrete equals 3.34 cubic feet
Common Material Densities
Liquids
Construction
Metals
Unit Information
Cubic Feet (ft³)
Unit of volume equal to a cube with 1-foot sides
Pounds (lbs)
Unit of weight/mass in the Imperial system
Density (lb/ft³)
Mass per unit volume, varies by material
Conversion Tips
Weight = Volume × Density
Volume = Weight ÷ Density
Density varies significantly by material
Used in construction, shipping, and engineering
Understanding Volume to Weight Conversion
Why Density Matters
Converting between volume (cubic feet) and weight (pounds) requires knowing the material's density. Different materials have vastly different densities - one cubic foot of gold weighs much more than one cubic foot of water or air.
Common Applications
- Construction: Calculating material weights for structural loads
- Shipping: Determining freight costs based on weight
- Engineering: Stress analysis and load calculations
- Manufacturing: Material quantity planning
Conversion Formulas
Weight = Volume × Density
Volume = Weight ÷ Density
Density Examples
- •Water: 62.43 lb/ft³ (reference standard)
- •Concrete: 149.83 lb/ft³ (heavy construction)
- •Steel: 490.1 lb/ft³ (very heavy metal)
- •Air: 0.08 lb/ft³ (very light gas)