Concrete Calculator

Choose a slab/footing or round column, enter dimensions and quantity, and compare ready-mix volume with approximate bag requirements.

Shape

Quantity

Waste (%)

Price per cubic yard ($)

Length (ft)

Width (ft)

Thickness / depth (in)

—Cubic yards

—Cubic feet

—Cubic meters

—10-yd truck loads

—Approximate 40 / 60 / 80 lb bag counts.

Bag yields vary by product; the bag estimate uses approximately 0.30 / 0.45 / 0.60 ft³ per 40 / 60 / 80 lb bag. Confirm coverage on the product label.

Ready-mix & bag comparison

Use the core calculator for geometry; this panel makes the resulting purchase volume easier to compare.

—Purchase yards

—10-yd truck fraction

—Approx. 60-lb bags

—Approx. 80-lb bags

Bag yields vary by product and ready-mix suppliers may have minimum loads or short-load fees. Confirm the actual product yield and delivery requirements.

Construction Calculator Feet & Inches Square Footage Linear Feet Cut List Rafter Concrete

Construction field-work cluster

Carry measurement uncertainty into the material decision

Use the exact calculator first, then stress-test realistic field measurement and rounding tolerance before a cut or purchase. Keep structural design, code approval and supplier specifications outside the browser estimate.

Start: Construction Calculator Check Area

All 30 construction tools

RafterSpan, pitch, board length and field tolerance Roof PitchRise/run, angle, factor and measurement sensitivity BrickOpenings, waste, modules and order sensitivity Cubic YardsVolume, waste, delivery and tolerance envelope Feet & InchesTape arithmetic, fraction rounding and tolerance Cut ListCut lengths, kerf, stock and tolerance GravelDepth, density, tonnage and order sensitivity StairsRise/run geometry and field-measurement sensitivity

Planning notes

Start with the measurement this calculator asks for, then use related length, area/volume, roof, stair, material, waste, or cut-planning tools only when the job needs them. Inputs and results stay in the browser.