Concrete Calculator

Calculate concrete volume and weight requirements for construction projects including slabs, footings, columns, and stairs. Supports multiple shapes, units, and bag calculations.

Slabs, Square Footings, or Walls

Length (l)

Unit

Width (w)

Unit

Thickness or Height (h)

Unit

Quantity

Rectangular Slab

Hole, Column, or Round Footings

Diameter (d)

Unit

Depth or Height (h)

Unit

Quantity

Cylindrical Column

Circular Slab or Tube

Outer Diameter (d₁)

Unit

Inner Diameter (d₂)

Unit

Length or Height (h)

Unit

Quantity

d₁

d₂

Hollow Tube

Curb and Gutter Barrier

Curb Depth

Unit

Gutter Width

Unit

Curb Height

Unit

Flag Thickness

Unit

Length

Unit

Quantity

curb

gutter

Curb and Gutter

Stairs

Run

Unit

Rise

Unit

Width

Unit

Platform Depth

Unit

Number of Steps

run

rise

Concrete Stairs

Slabs, Square Footings, or Walls

Hole, Column, or Round Footings

Circular Slab or Tube

Curb and Gutter Barrier

Stairs

Frequently Asked Questions About Concrete Calculations