How many square feet is a 30x42 room? Here we will show you how to calculate the square feet of a 30x42 room or area. We will also provide you with a tool where you can enter the price per square foot for your project to get the total cost.

This calculator can be used to calculate the square footage of a building, floors, walls, etc.

To calculate the square feet of a square or rectangular room or area, you simply multiply the length by the width. Below is the formula, the math, and the answer.

Length feet × Width feet = Square Feet
30 × 42 = 1260
30x42 room = 1260 square feet

Note that square feet can be shortened to sq ft or simply ft2. Therefore, the answer above can written as 1260 ft2.

Do you have a project where you need to calculate the cost of work needed for a 30x42 foot room or area? It may be that you are building a 30x42 room, laying new carpet or flooring, painting, installing tile, etc.

Regardless, if you have the price per square foot for your 30x42 feet project, then enter it below to calculate the total cost of your project.

Price Per Square Foot

Total Price

Square Footage Calculator
To get the square footage of another room, building, area, etc., enter the dimensions in feet below.

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How many square feet is a 30x43 room?
Here is the square footage for a different room with different dimensions.