Linear Measurements

• 12 inches equals 1 foot
• 3 feet equals 1 yard
• 16½ feet equals 1 rod, 1 perch, or 1 pole
• 66 feet equal 1 chain
• 5,280 feet equals 1 mile

Square Measurements

• 144 square inches equals 1 square foot
• 9 square feet equals 1 square yard
• 30¼ square yards equals 1 square rod
• 160 square rods equals 1 acre
• 43,560 square feet equals 1 acre
• 640 acres equals 1 square mile
• 1 square mile equals 1 section
• 36 sections equals 1 township

Cubic Measurements

• 1,728 cubic inches equals 1 cubic foot
• 27 cubic feet equals 1 cubic yard
• 144 cubic inches equals 1 board foot (12" x 12" x 1")