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.

## Relative Density Formula

The following formula is used to calculate the Relative Density.

RD = ds / dr
• Where RD is the Relative Density
• ds is the density of the substance (kg/m^3)
• dr is the density of the reference (kg/m^3)

To calculate the relative density, divide the density of the substance by the density of the reference.

## How to Calculate Relative Density?

The following example problems outline how to calculate Relative Density.

Example Problem #1:

1. First, determine the density of the substance (kg/m^3).
1. The density of the substance (kg/m^3) is given as: 80.
2. Next, determine the density of the reference (kg/m^3).
1. The density of the reference (kg/m^3) is provided as: 20.
3. 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 = ?