How Many Square Feet is a 20x20 Room?

In this article we will show you how to calculate the square feet of an 20x20 room or area and also let you calculate how much your project might cost based on a price per square foot (which is a common thing for household jobs).

You can use this guide to calculate the square footage and cost of a building, floor, walls, and more.

The calculation to work out the square feet of both a square and rectangular room like 20x20 is very simple. All you need to do is multiply the length by the width.

Square Feet = Length x Width
20 x 20 = 400

This means the answer is:

20x20 room = 400 square feet

Typing out the words square feet is quite long winded and if you deal with square feet a lot you'll mostly see it written as either sq ft or ft2.

We can write the answer above using those notation and 20x20 is 400 ft2

Calculate the Price of a 20x20 Room

If you have a project that requires you to calculate the cost of work or materials needed for a 20x20 room or area, the below calculator can help.

For example, laying new carpet or flooring, painting or papering walls, installing bathroom tiles etc.

Simple enter the price per square foot in the tool below and we'll show you how much it will cost for your project.

 400 ft2

Calculate the Square Foot of Another Room

Use the calculator below to find the square feet of another room and work out the project costs.


More Calculations