Gauging
What this tool does
Convert API gravity, specific gravity, and oilfield density at 60°F. No volume correction factor. This page says what the tool is for, in plain language. The working formula stays on the signed-in tool.
When to use it
Open API Gravity ↔ SG ↔ PPG when this is the job: Convert API gravity, specific gravity, and oilfield density at 60°F. No volume correction factor. That is usually a unit you need on the same sheet as the instrument.
Step-by-step
- Open API Gravity ↔ SG ↔ PPG from the tool list.
- Fill Unit system, Input quantity, API Gravity (@ 60°F) from the instrument, the drawing, or the job record. Use the unit shown beside each field.
- Run Calculate when that control is on the page, then read every result row and any warning.
- Check the result against the site procedure and the manufacturer data before you change a range, a wire, a setpoint, or a weight.
- This help page is public. Opening the tool still requires a Pro session.
Inputs
- Unit system
- Imperial or metric. Pick one and enter every other field in that system.
- Input quantity
- Choose the Input quantity that matches the instrument, the drawing, or the job. Choices include API gravity, Specific gravity, Density.
- API Gravity (@ 60°F)
- API Gravity (@ 60°F) is the value you read from the instrument, the drawing, or the job record. Enter it in °API.
Results
- Result
- The reported value for API Gravity ↔ SG ↔ PPG. Use the unit printed on that row.
- Warnings
- A warning means an entry is incomplete or outside what this tool will stand behind. Recheck the inputs and the site procedure.
Common mistakes
- Converting a number that is already in the destination unit.
- Ignoring the temperature basis the screen states.
- Do not treat a result from API Gravity ↔ SG ↔ PPG as a substitute for the site procedure or the manufacturer data.
Standards references
These are the standards and public references named on this tool. Clause numbers appear only when the catalog already cites them.
- API Manual of Petroleum Measurement Standards gravity definition at 60°F: °API = 141.5/SG − 131.5 (historically ASTM D287)
- Oilfield density: ppg = SG × 8.33, with 8.33 × 0.052 = 0.433 psi/ft
- Metric ton: 1000 / 0.45359237 lb. No API MPMS Chapter 11.1 volume correction factor.
Offline and access
This engine can run offline after the server has cached it for the signed-in account.
A free session can read this help page. The tool card shows the name and the short summary. Opening the tool requires Pro.