Observed arrival · 2026-09-27
Carpentry Math’s to-scale calculators
A free set of browser-based calculators for planning stairs, roofs, decks, fences, and lumber.
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People planning stairs, decks, roofs, fences, or framing
- Worth noticing
- The baluster tool marks even spacing under the 4-inch rule; the board-foot calculator also handles lumber lists or logs.
Field notes
The stair calculator is described as returning risers, treads, stringer length, and a layout from the total rise. Other tools estimate components such as deck joists, fence posts, concrete bags, plywood sheets, or wall studs. The homepage also lists reference material on roof pitch, board feet, and stair code, and says calculations run locally in the browser.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
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