Understanding the Square footage:

To understand how to calculate square footage we must first begin with the definition of area. An area is the size of a two-dimensional surface. The area of a trapezoid is the space contained within its 4 sides. To find out the area of a trapezoid, we need to know the length of two parallel sides and the distance (height) between them. The sides should be measured in feet (ft) for square footage calculations and if needed, converted to inches (in), yards (yd), centimetres (cm), millimetres (mm) and metres (m).

The formula:
Area of a Trapezoid = ((a + b) / 2 )h
Length of side a (drop down ft, in, yd, cm, mm, m)
Length of side b (drop down ft, in, yd, cm, mm, m)
Height of side h (drop down ft, in, yd, cm, mm, m)

Answer = (((a + b) / 2 )h) square area
Abbreviations of unit area: ft², in², yd², cm², mm², m²

Where do you need it in daily life?

Our Square Footage Calculator helps you calculate the area required for making wall mouldings, garden landscaping designs, carpeting, roofing and floor tiling.

What measurements do you need?

You need to know the length of two parallel sides and the distance (height) between them in either feet (ft), inches (in), yards (yd), centimetres (cm), millimetres (mm) or metres (m).

What can you calculate with this tool?

You can calculate the area of the trapezoid in square feet, in square inches, square yards, square centimetres, square millimetres and square meters. Yes, our tool is that awesome.

Our calculator gives you the option of calculating the exact cost of materials. All you have to do is enter the price per unit area and voila, you have the total cost of materials in a single click!

Conversion factors:

To convert among square feet, square inches, square yards, square centimetres, square millimetres and square meters you can utilize the following conversion table.