How many feet of fence for 2 acres?

Depends on the length and width. The more square the field the less fencing it will take. You need to measure the perimeter. Since it is a rectangle and not a square, you must first measure the length or width. Say you measure the width since it is the shortest of the two.

There are 43560 square feet in one acre or 87120 square feet in your two acres. So length times width equals 87120. Therefore 87120 divided by width (which you know since you measured it) will give you the length. The amount of fence you need is two times the length plus two times the width.

If your two acres were square, each side would be the square root of 87120 or 295.16 feet. Your fence would need to be four times that or 1180.64 feet of fence