Enter the density of the substance (kg/m^3) and the density of the reference (kg/m^3) into the Relative Density Calculator. The calculator will evaluate and display the Relative Density.

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## Relative Density Formula

The following formula is used to calculate the Relative Density.

**RD = ds / dr**

- Where RD is the Relative Density ((none))
- ds is the density of the substance (kg/m^3)
- dr is the density of the reference (kg/m^3)

## How to Calculate Relative Density?

The following example problems outline how to calculate Relative Density.

Example Problem #1:

- First, determine the density of the substance (kg/m^3).
- The density of the substance (kg/m^3) is given as: 80.

- Next, determine the density of the reference (kg/m^3).
- The density of the reference (kg/m^3) is provided as: 20.

- Finally, calculate the Relative Density using the equation above:

RD = ds / dr

The values given above are inserted into the equation below:

RD = 80 / 20 = 4 ((none))

Example Problem #2:** **

For this problem, the variables needed are provided below:

density of the substance (kg/m^3) = 30

density of the reference (kg/m^3) = 100

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer.

RD = ds / dr** = ?**