United States Land Measurements

Land measurements
The following terms are familiar terms to describe land:

Acre  10 square chains or 160 rods, or 43,560 square feet or 4840 square yards

640 acres  1 square mile

Chain  66 feet or 4 rods or 100 links

Foot  12 inches

Link  7.92 inches

Mile  80 chains or 320 rods or 5280 feet

Mile (square)  640 acres

Perch  1 rod or pole

Pole  1 rod or perch

Rod  16 1/2 feet or 1/4 chain or 25 links or 198 inches. Also equal to 1 perch or 1 pole

Rod (square)  272 1/4 square feet

Vara  33 inches

Yard  3 feet or 36 inches