Calculators

Volume Calculators

Rectangle
volume = length x width x depth
Square
volume = length x width x depth
Cube (square)
volume = side3
Cylinder (circle)
volume = pi x radius2 x height
Triangle
volume = 0.5 x base x height x depth
Concrete
volume = depth x width x length / 27 Cu. Ft.
Board Feet
(pieces x thickness x width x length)/12

Area Formulas

Rectangle
area = length x width
Square
area = length x width or area = side2
Circle
area = pi x radius2
Triangle
area= 0.5 x base x height
Perimeter
total of all four sides
Joists and Rafters ( 16” on center )
width x .75 + 1 x 2
Joists and rafters ( 24” on center )
width x .50 + 1 x 2