Yards for the ready-mix truck or bags for the mixer. Sidewalks run 4 inches; driveways 5 to 6 inches over a compacted base.
Pro habit: Past about 1 yard (2.7 yd³ with cushion here), call for ready-mix; that is roughly 45 bags per yard and your back will know it.
Order a cushion on ready-mix; coming up half a yard short on a monolithic pour is the expensive kind of short. Many plants have minimum-load fees below 3 or 4 yards. Weights are common industry approximations; confirm with your supplier before ordering.
More free calculators:
TrackOver runs dirt-work companies: jobs, crews, stamped site photos, machine hours, and billing in one place. Built inside a working excavation company.
Multiply length by width by depth in feet, then divide by 27 to get cubic yards. This concrete calculator does it for you: enter length and width in feet and depth in inches, and it returns cubic yards. Add about 10 percent for compaction, spillage, and uneven grade.
A cubic yard is 27 cubic feet, so at 0.6 cu ft per bag that is about 45 80 lb bags per yard. Past roughly a yard, buying in bulk usually beats bags on price and effort.
Yes. It is a free tool from TrackOver, software built inside a working excavation company for contractors who move dirt. No signup required to use it.