How to use it
- Enter positive specific gravity at 60°F.
- Calculate the API gravity value.
- Read the dimensionless degree-API reference.
API Gravity Calculator
Apply the standard API gravity equation to an entered specific gravity.
Important: This calculator is an educational estimate only. It is not mining, reserve reporting, economics, drilling, oilfield, refinery, gas handling, ventilation, confined-space, pipeline, pressure, excavation, trench, underground, construction, professional engineering, legal, regulatory, operational, emergency, or safety advice.
About the API Gravity Calculator
API gravity is represented here as a numerical transformation of entered specific gravity at the stated reference temperature.
Formula
API gravity = 141.5 ÷ specific gravity − 131.5.
Example
Specific gravity 0.85 gives approximately 34.97° API.
Notes
The calculator does not validate laboratory methods, temperature correction, product quality, custody transfer, trading or compliance requirements.