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Density and Mass

SGtolb/gal (UK)

Convert specific gravity (water) (SG) to pounds per imperial gallon (lb/gal (UK)).

Factor1 SG = 10.02241 lb/gal (UK)

Converter

SG

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

Result
10.0224lb/gal (UK)

Rendered to 6 significant figures.

Formula

Formula
lb/gal (UK) = SG × 10.02241

Multiply any value in specific gravity (water) by 10.02241 to obtain the value in pounds per imperial gallon.

Worked example

Convert 1 SG to lb/gal (UK).

  1. 01Start with 1 SG.
  2. 02Multiply by the conversion factor: 1 × 10.02241 = 10.0224 lb/gal (UK).
Result1 SG = 10.0224 lb/gal (UK)

Conversion table

SGlb/gal (UK)
110.022
220.045
550.112
10100.22
20200.45
50501.12
1001002.2
2002004.5
5005011.2
100010022

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from SG to lb/gal (UK)?
1 SG equals 10.02241 lb/gal (UK). To convert, multiply the value in specific gravity (water) by 10.02241.
How do I convert 1 SG to lb/gal (UK)?
1 SG = 10.0224 lb/gal (UK). For any value, multiply by 10.02241.
How do I convert lb/gal (UK) back to SG?
Divide by the same factor — or equivalently, multiply by 0.09977637. So 1 lb/gal (UK) = 0.0997764 SG.
When would I need to convert specific gravity (water) to pound per imperial gallon?
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?
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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