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Density and Mass

SGtolb/ft³

Convert specific gravity (water) (SG) to pounds per cubic foot (lb/ft³).

Factor1 SG = 62.42796 lb/ft³

Converter

SG

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

Result
53.0638lb/ft³

Rendered to 6 significant figures.

Formula

Formula
lb/ft³ = SG × 62.42796

Multiply any value in specific gravity (water) by 62.42796 to obtain the value in pounds per cubic foot.

Worked example

Convert 0.85 SG to lb/ft³.

  1. 01Start with 0.85 SG.
  2. 02Multiply by the conversion factor: 0.85 × 62.42796 = 53.0638 lb/ft³.
Result0.85 SG = 53.0638 lb/ft³

Conversion table

SGlb/ft³
162.428
2124.86
5312.14
10624.28
201248.6
503121.4
1006242.8
20012486
50031214
100062428

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from SG to lb/ft³?
1 SG equals 62.42796 lb/ft³. To convert, multiply the value in specific gravity (water) by 62.42796.
How do I convert 1 SG to lb/ft³?
1 SG = 62.428 lb/ft³. For any value, multiply by 62.42796.
How do I convert lb/ft³ back to SG?
Divide by the same factor — or equivalently, multiply by 0.01601846. So 1 lb/ft³ = 0.0160185 SG.
When would I need to convert specific gravity (water) to pound per cubic foot?
Density conversions are critical for fluid property datasheets, hydraulic head calculations, and reconciling lab measurements (often g/cm³) with process simulator inputs (kg/m³).
Is the conversion exact?
Yes. Both SG and lb/ft³ are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).

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