Enter the number of atoms in the plane and the total area of the plane into the Planar Density Calculator. The calculator will evaluate the Planar Density.

## Planar Density Formula

The following two example problems outline the steps and information needed to calculate the Planar Density.

PD = A / PA

Variables:

• PD is the Planar Density (atoms/area)
• #A is the number of atoms in the plane
• PA is the total area of the plane

To calculate the planar density, divide the number of atoms in the plane by the total area of the plane.

## How to Calculate Planar Density?

The following steps outline how to calculate the Planar Density.

1. First, determine the number of atoms in the plane.
2. Next, determine the total area of the plane.
3. Next, gather the formula from above = PD = #A / PA.
4. Finally, calculate the Planar Density.
5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

number of atoms in the plane = 1000

total area of the plane = 2.5

PD = #A / PA = ?