Everyday tools for architecture & construction.
Calculate, convert, and check dimensions — free, ad-free, and no account. Code references cite their sources.
Calculators and cited code answers — e.g. ramp slope, concrete, 2x4 size.
Popular tools
See all 27 →-
Feet-Inch-Fraction Calculator
Parse, convert, and round construction dimensions between imperial and metric.
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Stair Calculator
Risers, riser height, tread run, and pitch from a rise — cited to IRC R311.7.
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Roof Pitch Converter
Convert roof slope between rise-in-12 (6:12), degrees, and percent grade.
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Square Footage Calculator
Area in sq ft, sq yd, m² and acres from length × width — with an optional material-cost estimate.
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Concrete Takeoff
Cubic yards, cubic metres, and bag counts for slabs, footings, walls, columns, and round piers — with a waste allowance.
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ADA Ramp Slope Calculator
Ramp length, landings, and 1:12 compliance — cited to 2010 ADA §405.
- Source-cited — Every code number links to its standard — ADA, IRC, IBC, ASCE.
- Fast & ad-free — No trackers, no signup, no clutter — it loads instantly.
- Works offline — Installable; the tools you've opened work on the jobsite with no signal.
- Stays yours — Results save in your browser. Nothing is uploaded.
New · Image & PDF → vector
AI Traces — image to vector (SVG)
Turn a photo, sketch, logo, or PDF into clean, editable SVG — right in your browser, nothing uploaded. Free, no signup.