Domain Arrivals
You’re viewing the 2026-08-15 issue, not the current issue. Go to the current issue: 2026-10-21

Featured in Domain Arrivals · 2026-08-15

BuildMath: Construction Math With the Workings Left In

carpentercalc.com ↗ · Useful Tools · score 82.0
○Open: public page gives enough substance to understand the site $Paid: pricing, booking, ecommerce, subscription, or paid access is visible ADAds: visible ad load or ad-supported content ✦Pretty: notable design, copy, craft, or presentation ◆Pro: polished, finished-feeling, serious, or operationally mature ◇Niche: specific audience, workflow, or unusually focused use case ◉Human: personal, local, community, civic, handmade, or real-person signal !Suspicious: scammy, spammy, trust theater, finance fog, or credibility concern

A free set of construction calculators, printable charts, scaled diagrams, and source-linked code notes for jobs from lumber yards to roof framing.

Why it surfaced

BuildMath does not hide the arithmetic: its board-foot calculator shows the formula and a server-rendered result, while the wider site offers 32 calculators, 24 HTML and PDF charts, and six code guides. It is designed to keep useful jobsite references available even before the browser finishes loading—or when the connection disappears.

Read the complete issue Observed source ↗

Continue into the edition

The Two-Tonne Temperature Problem

August 15’s newborn domains include a live-aboard hydrogen airship with a two-tonne lift problem, a Japanese toolbox that explains its assumptions, an advisory-by-advisory Hawaiʻi hurricane archive, and a wedding-gift game about ungrateful poultry.

This is one of 1,000 discoveries in the 2026-08-15 Domain Arrivals issue.

Explore the complete issue Browse Useful Tools

More from Useful Tools

Three more arrivals

Potamo’s Explain-It-Yourself Toolbox potamo.net

A Japanese browser-based toolkit covering unit conversion, dates, text, code, weather, CSS, maps, learning, and more across 14 fields.

 Downtown Crowd: Is Downtown Worth It? nolapulse.com

A New Orleans convention calendar that predicts which weeks will actually fill downtown bars.

 Irugbin turns farm talk into a credit record irugbin.com

A WhatsApp-based farm ledger that turns voice notes and plain-language messages into season records, cost calculations, and lender-ready PDFs.