API Gravity Calculator from Specific Gravity at 60 degrees Fahrenheit

What is API Gravity?

API Gravity is a measure of the relative density of petroleum liquids. It is defined as the ratio of the density of a petroleum liquid at a specified temperature to the density of water at a specified temperature. The standard temperature for both is 60 degrees Fahrenheit (60°F).

How to Use This Calculator

1. Enter the Specific Gravity at 60°F in the input field. Specific gravity is a dimensionless quantity representing the density of a substance relative to water.
2. Click the "Calculate" button to compute the API Gravity.
3. The result will be displayed in API degrees. Note that API gravity decreases as the density of the liquid increases.

Significance of API Gravity

API gravity is an important parameter in the petroleum industry for several reasons:

• Pricing: Lighter oils (lower density) have higher API gravity and typically command higher prices.
• Transportation: The viscosity and flow characteristics of petroleum products are related to their API gravity.
• Refining: API gravity helps determine the type of crude oil and its potential uses.

Conversion Notes

The formula used in this calculator is derived from the relationship between specific gravity and API gravity:

API Gravity = 141.5 / Specific Gravity - 131.5

This formula ensures that the API gravity values are positive and correlate with the density of the liquid.