Enter the child element width (px) and the parent element width (px) into the Calculator. The calculator will evaluate the Responsive Percentage.

## Responsive Percentage Formula

RSP = CEW / PEW *100

Variables:

- RSP is the Responsive Percentage (%)
- CEW is the child element width (px)
- PEW is the parent element width (px)

To calculate the Responsive Percentage, divide the child element width by the parent element width, then multiply by 100.

## How to Calculate Responsive Percentage?

The following steps outline how to calculate the Responsive Percentage.

- First, determine the child element width (px).
- Next, determine the parent element width (px).
- Next, gather the formula from above = RSP = CEW / PEW *100.
- Finally, calculate the Responsive Percentage.
- 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.

child element width (px) = 200

parent element width (px) = 1800