Know before you build
Every project starts with the same questions: how much material, what will it cost, and is it worth doing right. Our calculators answer with numbers from university extension services and manufacturer specs — sources on the methodology page.
Mulch calculator
Beds measured, depth by mulch type, answer in cubic yards and bags — with the depth guidance extension services actually publish.
Measure mulchTopsoil calculator
Lawn topdressing or new beds, in cubic yards and truckloads, with honest depth ranges for each job.
Measure topsoilBoard foot calculator
Lumber math done right, including the nominal-versus-actual trap that throws off every first-timer.
Count board feetDeck board calculator
Boards, gaps, and waste factor for your deck's real dimensions — and a straight read on when to call a pro.
Plan deck boardsFence calculator
Posts, rails, pickets, and concrete bags per post hole, with the depth rules extension services publish.
Plan a fenceDeck stain calculator
Gallons by area, coats, and wood condition, using coverage rates from the manufacturers' own spec sheets.
Estimate stainWhy trust these numbers?
Because we show where every one comes from. The methodology page cites each constant to a university extension service, a manufacturer spec sheet, or an industry standard, and where published sources disagree we show you the disagreement instead of hiding it. Estimates get labeled as estimates.
Structural work has one more rule: building codes and site conditions vary. Confirm post depths, footings, and wall heights with your local permit office before you dig.