[header] How to buy tile online [title] Measure the area of the floor that needs tile. [step] This will help you determine how much tile is needed for the project. [substeps] Use a measuring tape to measure the length and width of your floor, then multiply the length and the width to calculate the total floor area. 
For example, if your room is 12 feet (3.65 meters) by 9 feet (2.74 meters), your total floor area will be 108 feet (32.91 meters). [title] Determine the amount of tiles you need to order.