Convert Specific Gravity to Pound per Cubic Foot

1 SG = 62.428 lb/ft³

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Conversion Formula

$$\rho_{\text{lb/ft³}} = SG \times 62.428$$

Multiply specific gravity by 62.428 to get lb/ft³.

SG to lb/ft³ Conversion Table

Specific Gravity (SG)Pound per Cubic Foot (lb/ft³)
0.16.2428
0.531.214
162.428
2124.856
5312.14
10624.28
251,560.7
503,121.4
1006,242.8
25015,607
50031,214
1,00062,428

SG to lb/ft³ in Engineering

Density conversions are critical for fluid mechanics, material selection, concrete mix design, and petroleum engineering. Specific gravity (relative to water at 4°C) is commonly used as a dimensionless density ratio across all disciplines.

Specific Gravity: Dimensionless ratio of density to water at 4°C (1000 kg/m³). SG = 1.0 for water. Universal engineering reference.

Pound per Cubic Foot: Primary US density unit. Water = 62.4 lb/ft³. Used for soil, concrete, aggregate, and material densities.

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