Observed arrival · 2026-09-10

TrustTheCalcs: Construction Math With Receipts

trustthecalcs.com Observed source

Editorial interest 84/100 Selection signal · not a rating of the site

A browser-based masonry calculator that estimates grout volume, cubic yards, and bag counts while showing the standards and datasheets behind each result.

Landing page captured for the 2026-09-10 issue.

Field notes

The calculator accepts wall dimensions or a block count, nominal block width, grout spacing, bond-beam courses, waste, and bag size, then returns cubic-foot and cubic-yard volumes with bag estimates. Its distinctive feature is the side-by-side methodology: the example gives 2.14 cubic yards from CMHA TEK 09-04A and 2.12 cubic yards from geometry based on ASTM C90 minimum face-shell and web thicknesses. Source labels also identify the QUIKRETE bag-yield data.

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✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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