Dimension	SI units	Oil metric units	Oil field units
M L^-3	kg/m³	g/cc	API

Densities of popular petroleum fluids at Standard Conditions

Fluid	Normal density range (g/

cm3)Gradient range (psi/ft

cc)
Natural Gas	0.007 – 0.30

0.003 – 1.130

0.200 – 0.40

0.090 – 0.174


Oil	0.400 – 1.12

0.174 – 0.486


Water	1.000 – 1.15

0.433 – 0.500

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