Concrete calculator: cubic yards
Put in the area and the thickness. Get the cubic yards to order.
- Volume
- Slab
- cu yd
- Footings
- cu yd
- Walls
- cu yd
- Concrete volume
- cu yd
- Cubic feet
- cu ft
- Volume with overage
- cu yd
An estimate from the numbers you enter. Check your own figures.
The formula usedSlab cubic yards = area in sq ft × thickness in inches ÷ 324. Footings = length × width × depth, in feet, ÷ 27. Walls = length × height × thickness, in feet, ÷ 27. With overage = total × (1 + overage ÷ 100).
Nothing you type here is saved. Download it if you want to keep it.
How it works out
Cubic yards are the area times the thickness in inches, divided by 324. That's the area times the thickness in feet, divided by the 27 cubic feet in a yard. Footings and walls work the same way: length times width times depth. Overage, if you add it, goes on top.
600 sq ft at 4 in = 7.4 cu yd, 8 to order.
Volume only. It doesn't say what thickness, strength or reinforcement a job needs.
Do it on the real job
A concrete job's takeoff in Optracs holds the slab area, the thickness and the volume.
One plan. Every feature we sell, included. No charge per person.
Questions
How many yards for a 4 inch slab?
Type the slab area and 4 in for the thickness. The tool divides by 324 and shows the cubic yards. 600 sq ft at 4 in = 7.4 cu yd.
Can I add footings and walls?
Yes. Add footings or walls and the tool gives each part's volume and the total.
Does it add extra?
Only if you put it in. Type your overage percent and you get the volume with overage beside the exact volume.
Optracs tools
Concrete volume
An estimate from the numbers you enter. Check your own figures.
The formula usedSlab cubic yards = area in sq ft × thickness in inches ÷ 324. Footings = length × width × depth, in feet, ÷ 27. Walls = length × height × thickness, in feet, ÷ 27. With overage = total × (1 + overage ÷ 100).
Made with Optracs tools