기하학
Concrete Calculator
Calculate the volume of concrete needed for slabs, footings, and columns.
사용 방법
- Select the shape you are pouring: Slab (patios, driveways) or Column (post holes, footings).
- Enter the length, width, or diameter.
- Enter the depth (thickness) of the pour. A standard driveway is 4 inches thick.
- The calculator determines the cubic yardage needed for a ready-mix truck, as well as the number of bags needed if mixing by hand.
공식
Concrete Math:
Slab Volume = Length × Width × Depth
Cylinder Volume = π × (Diameter / 2)² × Depth
Bag Yields (Approximate):
1 x 80lb bag = 0.60 cubic feet
1 x 60lb bag = 0.45 cubic feet
Slab Volume = Length × Width × Depth
Cylinder Volume = π × (Diameter / 2)² × Depth
Bag Yields (Approximate):
1 x 80lb bag = 0.60 cubic feet
1 x 60lb bag = 0.45 cubic feet
The Concrete Calculator prevents over-ordering expensive ready-mix concrete and ensures you buy enough bags for smaller DIY projects. By converting dimensions into cubic yards and standard bag counts, it guarantees your patio or footing pour goes smoothly without running out of material.