To calculate the amount of artificial grass you will need, first measure the length and width of the area you want to cover. Then, multiply those numbers together to get the square footage. Finally, divide that number by 100 to get the number of square yards you will need. For example, if your area is 10 feet by 10 feet, you will need 1 square yard of artificial grass. If you have a more complex shape, you can break it down into smaller rectangles and calculate each one separately. Once you have the total square footage, just divide by 100 to get the number of square yards needed. Of course, these calculations are just estimates. The best way to know exactly how much artificial grass you need is to contact a professional. They will be able to give you a more accurate estimate based on the specific dimensions of your project.