ProjectCalc

ProjectCalc is a free collection of calculators for construction, home improvement, DIY, trades, and finance. It is built for pro or DIY use and is described as giving fast, dead-simple answers for what users actually buy and install, with the math shown so it can be checked.

The site groups its calculators into Home & DIY, Trades & Construction, and Finance. Home and DIY tools cover items such as concrete bags or yards, drywall sheets, paint gallons, mulch and gravel, sod pallets, deck stain, fence posts, tile, roofing shingles, hardwood planks, carpet, vinyl, insulation, pavers, retaining wall blocks, roof pitch, and topsoil. Trades and construction calculators include carpentry, masonry and siding, electrical, plumbing, and HVAC topics such as board feet, cut lists, brick counts, voltage drop, conduit fill, pipe slope, water capacity, BTU sizing, and duct CFM. The finance section includes mortgage, car payment, personal loan, and tip calculations.

ProjectCalc says there are 73 calculators in total. It also offers bundles, including a Contractor Estimating Mega Bundle and a Garage Ledger Vault, which are described as Excel workbooks. The contractor bundle is said to work in Excel, Google Sheets, LibreOffice, and Apple Numbers, while the Garage Ledger Vault is described as a project-car build tracker with dashboard and ROI math.

Access is web-based. The site says there is no signup and no popups, and that it works on a 4G phone with one bar. It also says the calculators run entirely in the browser. The page describes ProjectCalc as free, with paid bundles available.