API Gravity Calculator: Determine Crude Oil Density & Quality

Calculate API Gravity from Specific Gravity

Enter the specific gravity of the petroleum liquid at 60°F.

Explore our free online API Gravity Calculator to accurately determine the density and quality of crude oil, condensates, and other petroleum products. Convert specific gravity into API gravity to assess market value, optimize refining processes, and ensure compliance in the oil & gas industry.

Formula:

The API Gravity is calculated using the following formula:
API Gravity = (141.5 / SG60°F) - 131.5
Where:

  • SG60°F: Specific Gravity of the petroleum liquid at 60°F (15.56°C) relative to water at 60°F (dimensionless).

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