Observed arrival · 2026-08-28
Craft Quantities: Construction Maths Done Properly
A large library of construction calculators covering materials, quantities, electrical work, plumbing, HVAC, landscaping, energy, and heavy civil projects.
Field notes
The library is divided into trade-oriented collections, with Materials & Quantities accounting for 542 of the 864 listed tools. Examples range from ordinary remodeling estimates such as baseboard and drywall quantities to specialist calculations including AASHTO pavement structural number and raised-access-floor components. The homepage states that the tools support imperial and metric units, work offline, and keep calculations on the device; the extracted page does not show an individual calculator interface or verify the underlying sources.
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