How do I calculate concrete for a round column?

Use the cylinder volume formula with radius and height, convert cubic feet to cubic yards, then multiply by the number of columns and add waste.

Can this calculate Sonotube concrete?

Yes. Use round shape, enter the tube diameter and height, then review cubic yards or bag estimates from your supplier.

Does the load check replace engineering?

No. It is a rough screening indicator only. Structural column design requires a qualified engineer and project-specific loads.

Concrete Column Calculator

Estimate concrete volume, cubic yards, form area, rebar weight and material cost for round piers or rectangular concrete columns.

Column shape

Column count

Height, ft

First side, in

Second side, in

Concrete strength, psi

Vertical bars

Vertical bar size

Tie bar size

Tie spacing, in

Optional axial load

Load unit

Concrete price, USD/yd3

Rebar price, USD/lb

Estimate concrete for columns and piers

Concrete-column searches usually need a quick material estimate for round forms, piers or rectangular columns: height, diameter or side dimensions, number of columns, rebar cage and cost.

V_{r o u n d} = π r^{2} h

V_{r ec t} = a \times b \times h

y d^{3} = \frac{f t ^{3}}{27}

Use structural checks cautiously

Not a column design

Any load screening here is a simplified planning cue. Real concrete columns need design for eccentricity, slenderness, confinement, reinforcement detailing, anchorage and applicable code.

Frequently Asked Questions

Sources and References

Calculations are based on the listed reference sources. Links open in a new tab.

Updated: May 29, 2026

Related Tools

Concrete Calculator

Calculate concrete volume for slabs, footings, columns and custom pours, with cubic yards, cubic feet, waste allowance and 80 lb bag estimates.

Open

Rebar Calculator

Estimate reinforcing bar length, sticks, weight, tie wire and material cost for slabs, footings, walls or columns in U.S. units.

Open

Footing Calculator

Estimate continuous footing concrete, cubic yards, rebar, formwork and material cost from footing length, width and depth.

Open

Concrete Slab Calculator

Estimate concrete cubic yards, slab area, base gravel, rebar or mesh, formwork and material cost for a slab-on-grade project.

Open