API Gravity calculations

API Gravity measures how heavy or light a petroleum liquid is compared to water, indicating its density and quality. It is calculated using a formula that converts the liquid's specific gravity (density relative to water) into a 0–100 scale, with higher values representing lighter, more valuable oils like gasoline, and lower values indicating heavier oils like asphalt. The formula is: API Gravity = (141.5 / Specific Gravity) - 131.5. This scale helps industry professionals assess the suitability of crude oil for different products and refining processes.