About

SquareFootCalcs is a set of 10 free material calculators for home and yard projects. It is built for people buying building and garden materials, and it requires no account, no app, and no email address.

About

The calculators are grouped into Concrete & Hardscape, Yard & Garden, Interior, and Structure & Exterior. They cover concrete, gravel and crushed stone, mulch, sod and grass seed, topsoil and garden soil, paint, tile, deck boards, fencing and roofing. Each calculator page lists the figures it uses in a table, and the date they were last checked appears under the tool. The bag yields, coverage rates and depth recommendations come from values published by the major manufacturers and standard trade rules of thumb.

SquareFootCalcs is a static site built with Astro, and every page is pre-rendered HTML. Nothing you type is sent anywhere and the arithmetic happens in your browser. The shared conversion and rounding code is covered by unit tests. SquareFootCalcs is an estimating tool, not an engineering calculation, and it will not tell you whether a slab is thick enough, whether it needs reinforcement, or whether your local code requires a permit. The label on the product is the authority for the product you actually bought.

Key figures

0.05
cubic foot diffe
27
cubic feet

What we do

  1. Concrete & Hardscape Calculators

    The Concrete Slab Calculator works out the cubic yards of concrete and the number of bags for a slab, footing or post hole. The Gravel & Crushed Stone Calculator turns an area and depth into cubic yards of gravel, and into tons if your supplier sells by weight.

  2. Yard & Garden Calculators

    The Mulch Calculator turns bed dimensions into cubic yards of mulch or bags, and compares bulk delivery against bagged. The Sod & Grass Seed Calculator covers rolls or pallets of sod for a lawn area, or pounds of grass seed at the recommended rate for your species. The Topsoil & Garden Soil Calculator gives cubic yards and bags of topsoil for a bed, a lawn top-dressing, or a raised bed filled to the rim.

  3. Interior Calculators

    The Paint Calculator turns room dimensions into gallons of paint, with doors and windows deducted and coats accounted for. The Tile Calculator gives boxes of tile for a floor or wall, with the waste allowance set by how you are laying it.

  4. Structure & Exterior Calculators

    The Deck Board Calculator works out deck boards, joists and fasteners for a rectangular deck, allowing for the gap between boards. The Fence Calculator gives posts, rails, pickets and the concrete for the post holes, from the length of the fence run. The Roofing Shingle Calculator gives squares and bundles of shingles from the building footprint and the roof pitch, with the slope factor applied.

Contact

Reach us
hello@squarefootcalcs.com
Official site
squarefootcalcs.com