You can calculate and display area and perimeter from coordinates. You can also see point numbers, length of each side and angle of each corner on the shape of the area. To calculate the area, you number the vertices in order in clockwise or counter-clockwise. After writing the coordinates of area respectively, press calculate button to see the results. Below the calculation, you can see the shape of the area. It supports international units such as meter, yard, hectare, acre, feet.. Separator of input coordinate pairs should be space or comma.