Concrete Calculator
length
width
thickness
What to measure
Pour type
Slab — rectangular
Slab — round
Footing or trench
Column or post hole
Wall
Stairs
Length
ft
inch
yd
m
cm
Accepts 10, 10ft, or 10' 6".
Width
ft
inch
yd
m
cm
Thickness
inch
ft
cm
mm
4 in is standard for a patio, 6 in for a driveway.
Waste allowance
percent
Covers subgrade irregularity and spillage. 5–10% is typical.
Price per cubic yard
usd
Ready-mix runs about $125–165 per cubic yard.
Concrete needed
1.36 cu yd
Show the work
Concrete Calculator
by Rule Calculator