The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water: if its API gravity is greater than 10, it is lighter and floats …

API expresses the gravity or density of liquid petroleum products. Online API to Specific Gravity calculator.

API gravity is defined as the heaviness or lightness property of the liquid with respect to water. This parameter is specifically derived for petroleum products.

Jun 12, 2025 · API gravity, an acronym for American Petroleum Institute gravity, is a specific gravity scale developed by the API for characterizing the relative density of petroleum liquids.

API gravity is short for American Petroleum Institute gravity, an inverse measure that is used to determine the weight of petroleum liquids in comparison to water.

Jun 19, 2025 · Developed by the American Petroleum Institute, API gravity is expressed in degrees and provides an indication of how heavy or light a petroleum liquid is compared to water.

Table Definitions, Sources, and Explanatory Notes

Generally speaking, oil with an API gravity between 40 and 45° commands the highest prices. Above 45°, the molecular chains become shorter and less valuable to refineries.

API gravity, or the American Petroleum Institute gravity, is a measure of how heavy or light a petroleum liquid is compared to water. It is an important factor in the oil and gas industry for …

The API of crude oils varies typically between 10 and 50, with most crude oils falling in the range of 20-45. Using API gravity, the conventional crude oils can be generally considered as light …