Specific Gravity to Density Formula:
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Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance (typically water). This calculator converts specific gravity to density in pounds per gallon (ppg), which is commonly used in various industries including petroleum and chemical engineering.
The calculator uses the conversion formula:
Where:
Explanation: The formula converts specific gravity to absolute density by multiplying by the density of water and converting units from lb/ft³ to ppg.
Details: Accurate density calculations are essential for material handling, fluid dynamics, buoyancy calculations, and various engineering applications where precise measurements of substance properties are required.
Tips: Enter the specific gravity value (must be greater than 0). The calculator will automatically compute the corresponding density in pounds per gallon (ppg).
Q1: What is specific gravity?
A: Specific gravity is a dimensionless quantity that represents the ratio of the density of a substance to the density of water at a specified temperature.
Q2: Why convert to pounds per gallon?
A: Pounds per gallon is a common unit in many industries, particularly in the US, for measuring density of liquids and slurries.
Q3: What's the reference temperature for specific gravity?
A: Typically 60°F (15.6°C) for petroleum products and 39.2°F (4°C) for scientific applications, as water has its maximum density at this temperature.
Q4: Can I use this calculator for any substance?
A: Yes, as long as you have an accurate specific gravity measurement for that substance relative to water.
Q5: How accurate is this conversion?
A: The conversion is mathematically exact based on the defined relationship between specific gravity and density. Accuracy depends on the precision of your specific gravity measurement.