Square Footage Calculator

To calculate room square footage, first measure the dimensions of your space. The two dimensions to measure are the length and width of the area you need to calculate. 


  • To find length, locate the longest side of the area to be measured. 
  • Fix a tape measure or other measuring tool to one end of the length and extend it to the other end. 
  • Record the measurement. 
  • To find the width, locate the shortest side of the area to be measured. Repeat the process and record that measurement.