Question 1

How do I convert lb/gal to kg/m³?

Accepted Answer

Multiply by 119.83. Water at 8.34 lb/gal = 1000 kg/m³.

Question 2

Are US and UK gallons different for density?

Accepted Answer

Yes. US gallon = 3.785L. UK gallon = 4.546L. This affects lb/gal conversions.

Question 3

What's the relationship between density and specific gravity?

Accepted Answer

Specific gravity is density relative to water (1 g/cm³). So a material with SG of 2.5 is 2.5 times denser than water, or 2500 kg/m³.

Question 4

Why does temperature affect density?

Accepted Answer

Most materials expand when heated, decreasing density. Water is unusual - it's densest at 4°C. This is why ice floats.

lb/gal to kg/m³ Converter

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