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 on water; if less …

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.

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.

A convenient scale of the American Petroleum Institute (API) that is inversely related to the density of liquid petroleum: API gravity = (141.5°/ [secific gravity at 16°C]-131.5°). A higher API indicates lighter …

Calculate API gravity with our online calculator and learn about the equations behind it, including the formula and conversion tables for accurate measurements in the oil and gas industry, ensuring …

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 classifying and …

Sep 3, 2025 · In the petroleum industry, API gravity is one of the main measurements used to classify crude oil and refined products. Developed by the American Petroleum Institute (API), this standard …