square feet to cubic yards

How do I determine how many cubic yards are in 800 square feet.

I think it would be square feet in one cubic yard divided into 800.

27 = square feet in one cubic yard

800/27=29.630

Hope this helped you.

9 square feet to one cubic yard.
800/9 = 88.89

[Robert Fogt]

It depends on the thickness.

I assume this is something like sand or gravel or soil. Just need to know how thick you plan on spreading it.

Concrete - 3825 sq ft / 4 inches thich

[Robert Fogt]

3825 square foot * (4 inches / 12) foot = 1275 cubic foot

1275 cubic foot = 47.222 cubic yard

Originally Posted by Unregistered

9 square feet to one cubic yard.
800/9 = 88.89

There are 9 square feet to one SQUARE yard, not cubic yard.

There are 81 square feet to a cubic yard, providing the depth is one foot.

The typical formula for conversion is (Length in Feet X Width in Feet X Depth in Feet) / 27 = CY.

Example: 100' (L) X 200' (W) X 6" (D)
= 20000 X .5
= 10000 SF / 27 = 370.37 CY

You need a thickness measurement as well ie square is 2 measurements, cube is 3

since 1 cubic yard = 27 cubic feet ( 3'x3'x3')

Let's say you are using sand 12" thick over 800 square feet,
You'll need a common denominator so 12" = 1 foot thick

1X800 = 800 cubic feet/ 27 cubic feet(feet in a cubic yard)
= 29.62 cubic yards at 1 foot thick

if it's 1" thick.. it's 29.62x1/12 (since 1 " is 1/12th of a foot)
= 2.47 cu yds

if it's 4" thick.. it's29.62 x 4/12 (4/12=.333) so it's 29.62 x .333
= 9.86 cu yds

Now.. if you're using topsoil... for under sod or for a garden factor in compression. add about 15%

Originally Posted by Robert Fogt

It depends on the thickness.

I assume this is something like sand or gravel or soil. Just need to know how thick you plan on spreading it.

I need 6 inches depth over 400 square feet