Specific Gravity Calculator

If you want to determine whether an object will sink or float, you can use our specific gravity calculator.

In physics, specific gravity, also known as relative gravity, is defined as the relationship between the densities of a substance and water at a particular temperature. Or in other words, the ratio between the substance's density and water density is called specific gravity. At the same time, the specific gravity has no unit because the unit of both substance density and water density are canceled out in the formula. That is why it is a dimensionless quantity.


Formula of Specific Gravity Calculator

To instantly find out the gravitational potential energy absorbed by an object, you can jump to our calculator. Or to find it manually, you can use the formula listed below:

\[SG\; = \;\frac{{\rho \;substance}}{{\rho \;{H_2}O}}\]


SG = Specific Gravity

ρ substance = density of a substance

ρ H2O = density of water


For a more precise understanding of how to find the specific gravity, let us have an example below:

Suppose the density of gasoline is 721 kg/m3. Then find out the specific gravity of gasoline.

Given data

The density of gasoline = 721 kg/m3
The density of water = 1000 kg/m3

To Find

The specific gravity of water = ?


To find the specific gravity of water, you can use the formula listed below:

\[SG\; = \;\frac{{\rho \;substance}}{{\rho \;{H_2}O}}\]

Putting values in the formula:

\[SG\; = \;\frac{{\;721}}{{ \;{1000}}} = 0.721\]


To calculate acceleration due to gravity, you can use our Acceleration Due To Gravity Calculator.

How to use the Specific Gravity Calculator?

The steps to use the specific gravity calculator are as follows:

Step 1: Enter the density of the substance in the required input.

Step 2: The calculator will automatically display an answer on the screen.

Calculator use

You can use our specific gravity calculator in various science principles, such as gemologists can use it to identify related gems. In auto mechanics, you can use it to examine battery fluid and antifreeze. LSI kw formula for specific gravity find specific gravity how to find the specific gravity