Frequently Asked Questions
What is API gravity?
A petroleum-industry density scale: °API = 141.5/SG - 131.5. Lighter oils have higher API.
What API number is light crude?
Above 31.1° API is classified as light crude. WTI and Brent are both light at ~39° and ~38° API respectively.
Why use 60 °F?
Petroleum volumes change measurably with temperature, so 60 °F (15.6 °C) is the industry-standard reference. ASTM tables provide corrections for other temperatures.
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This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.