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Calculator library

Find the right tool without hunting through the site.

Search 13 live calculators by material, job, or geometry. Each tool now states when it fits the project, what to verify before ordering, and where to read the full estimating guide.

  • Search by material or project
  • Check project fit before calculating
  • Calculator + guide together
13 of 13 tools
Concrete projectPopular workflow

Multi-Shape Concrete Project Calculator

Combine slabs, circular pours, footings, columns, walls, and post holes into one auditable concrete order.

Use this when
One concrete order contains several supported shapes and you want one allowance and one final bag-rounding step.
Verify before ordering
Confirm every part uses the intended dimensions and that the supplier order increment matches the final combined quantity.
Open calculatorRead guide
SlabsPopular workflow

Concrete Calculator

Rectangular slab volume, allowance, ready-mix quantity, and complete concrete bags.

Use this when
The pour is a rectangular slab, pad, or section with one measured length, width, and thickness.
Verify before ordering
Recheck formed dimensions, thickness, waste allowance, and the exact bag yield or ready-mix ordering rule.
Open calculatorRead guide
Slabs

Circular Slab Concrete Calculator

Circular slabs and pads from measured diameter, depth, quantity, and allowance.

Use this when
The pour is circular and you know the measured diameter, thickness, and number of identical slabs or pads.
Verify before ordering
Use the actual diameter rather than circumference and confirm the final formed depth before applying allowance.
Open calculatorRead guide
Foundations

Footing Concrete Calculator

Identical rectangular footing volume with explicit allowance and final-project bag rounding.

Use this when
You are estimating the material quantity for measured rectangular footings of the same size.
Verify before ordering
Footing dimensions must come from approved plans or a qualified project professional; this tool does not size foundations.
Open calculatorRead guide
Structure

Column Concrete Calculator

Square, rectangular, or circular column quantity from actual measured dimensions.

Use this when
Column geometry and dimensions are already specified and you only need concrete volume and purchase quantity.
Verify before ordering
Confirm the structural dimensions, shape, quantity, and any embedded or displaced volume required by the project documents.
Open calculatorRead guide
Structure

Concrete Wall Calculator

Concrete walls with measured full-depth opening subtraction before volume calculation.

Use this when
Wall length, height, thickness, and any full-depth openings are already measured or specified.
Verify before ordering
Only subtract openings that truly remove the full wall thickness, and confirm structural thickness from the project design.
Open calculatorRead guide
Posts & fences

Post Hole Concrete Calculator

Round post holes, multiple-hole quantity, and optional round or square post displacement.

Use this when
You know the measured hole diameter and depth and need concrete for one or more identical round post holes.
Verify before ordering
Confirm required hole dimensions locally and include post displacement only when the post occupies the modeled concrete volume.
Open calculatorRead guide
PaintPopular workflow

Paint Calculator

Room walls and ceilings using measured openings, coats, product coverage, and containers.

Use this when
You can measure wall and ceiling area, openings, number of coats, and the coverage printed for the paint you plan to use.
Verify before ordering
Check the current product label because texture, porosity, application method, color change, and primer can change real coverage.
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FlooringPopular workflow

Tile Calculator

Tile quantity, complete boxes, layout dimensions, grout spacing, and cutting allowance.

Use this when
The tiled area, tile dimensions, grout spacing, box quantity, and cutting allowance are known.
Verify before ordering
Confirm the actual box count and batch availability; patterns, diagonal layouts, breakage, and attic stock may require more material.
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Interior walls

Drywall Calculator

Room walls, optional ceiling, measured openings, panel size, allowance, and complete sheets.

Use this when
You know the room dimensions, openings, whether the ceiling is included, and the sheet size you intend to buy.
Verify before ordering
Panel layout, fire or moisture rating, local requirements, and offcut reuse are project decisions beyond a simple area estimate.
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MasonryPopular workflow

Brick Calculator

Net wall area, measured openings, documented coverage, and explicit breakage allowance.

Use this when
You know the net wall area and have a documented brick coverage rate for the selected unit and mortar joint.
Verify before ordering
Use the supplier or manufacturer coverage for the exact brick and joint; wall thickness, bond, cuts, and breakage affect the order.
Open calculatorRead guide
LandscapePopular workflow

Gravel Calculator

Layer volume, adjustable density, total weight, tons or tonnes, and complete bags.

Use this when
You can measure the coverage area and installed depth and have a reasonable density for the actual gravel product and condition.
Verify before ordering
Supplier density, moisture, compaction, subgrade variation, and delivery increments can materially change the purchased tonnage.
Open calculatorRead guide
Landscape

Mulch Calculator

Garden-bed volume, installed depth, bulk cubic yards, and complete package quantities.

Use this when
You know the bed area, target installed depth, and either the bulk ordering unit or exact bag volume.
Verify before ordering
Check the package volume and supplier unit; settling, irregular bed edges, and existing mulch depth affect the practical quantity.
Open calculatorRead guide

Choose by geometry first

The right material calculator starts with the shape you actually measured.

A material name alone is not enough. Concrete can be a rectangular slab, circular pad, footing, column, wall, post hole, or a project that combines several of those shapes. Paint, tile, drywall, brick, gravel, and mulch each depend on different measurements and product assumptions.

Pick the calculator whose modeled geometry matches the project, keep dimensions in their real units, and enter product-specific values such as coverage, density, yield, package volume, or pieces per box where the tool asks for them. If the project shape does not match the calculator, split it into supported shapes or use the matching guide before estimating.

Read the estimating workflow