Home » Petroleum Engineering Show Out » API Degree To Specific Gravity Calculation

This is not brand new formula but very handy calculation to have. The importent calculation for Petroleum Engineer.

API Gravity = ( 141.5 / Specific Gravity ) – 131.5

Specific Gravity = 141.5 / ( 131.5 + API )

Example: pure water at 60 deg F with  a specific gravity of 1.0 would have an API gravity:

API Gravity = ( 141.5 / 1.0 ) – 131.5 = 10 deg API

Degree
API
Specific
Gravity
10 1.000
15 0.966
20 0.934
25 0.904
30 0.876
35 0.850
40 0.825
45 0.802
50 0.780
55 0.759
60 0.739

Incoming Popular Post On Our Site:

  • api to specific gravity calculator (374)
  • api gravity calculator (357)