Petroleum Engineering specific formulas can be found here.

- Accumulator Capacity - Usable Volume Per Bottle
- Annular Capacity - Casing & Drill Pipe
- Annular Velocity
- Annular Volume in bbls
- Pressure Gradient (psi/ft) to Mud Weight Specific Gravity (SG)
- Pressure Gradient (psi/ft) to Mud Weight (lb/ft
^{3}) - Pressure Gradient (psi/ft) to Mud Weight (PPG)
- Pressure (psi) to Mud Weight (PPG) using feet as Units of Measure
- Pressure (psi) to Mud Weight (PPG) using metres as Units of Measure
- Drill String Volume in bbls
- Equivalant Circulating Density
- Find Specific Gravity using Pressure Gradient (psi/ft)
- Find Specific Gravity using Mud Weight (lb/ft
^{3}) - Find Specific Gravity using Mud Weight (PPG)
- Hydrostatic Pressure using PPG and Feet
- Hydrostatic Pressure (psi) using Pressure Gradient (psi/ft)
- Hydrostatic Pressure (psi) using Metres
- Hydrostatic Pressure (psi) using Mud Weight (lb/ft
^{3}) - Control Drilling – Maximum Drilling Rate feet per hour
- Maximum Allowable Mud Weight for Leak Off Test
- Pressure Gradient using Mud Weight (lb/ft
^{3}) - Pressure Gradient using Mud Weight (ppg)
- Pressure Gradient using Mud Weight Specific Gravity (SG)
- Output for Triplex Pumps in Barrels Per Stroke
- Output for Triplex Pumps in Gallons Per Minute
- Output for Duplex Pumps
- Slug Calculation - Length of Dry Pipe
- Slug Weight Calculation - Length of Dry Pipe
- Specific Gravity to Mud Weight (ppg)
- Specific Gravity to Pressure Gradient (psi/ft)
- Strokes - Surface to Bit
- Strokes - Bit to Surface ("bottoms up")
- Total Strokes - Kelly to Shaker