About Buildcalchub
Free construction calculators built by a 15-year construction engineer, calibrated against real jobsite data, and dedicated to transparency in construction math.
Why Buildcalchub Exists
Every construction project starts with a calculation: how much material, how deep, how thick, how wide, how much will it cost. Those calculations drive six-figure purchase decisions on residential builds and seven-figure orders on commercial projects. Getting them wrong is expensive.
Most online construction calculators are built to generate ad impressions, not reliable estimates. They hide their formulas, use inconsistent density defaults, skip waste factors, and provide numbers without context. The worst of them are AI-generated content farms with no engineering oversight.
Buildcalchub is different. Every calculator here is:
- Built around a transparent formula — shown in the page, not hidden in JavaScript
- Calibrated against real jobsite numbers — densities, coverage, and waste factors from actual projects
- Paired with data tables — so you can sanity-check the output against industry reference
- Documented with real examples — three worked calculations per page, from projects I've actually run
- Reviewed by a licensed construction engineer — not just ‘written by an SEO content writer’
Who Runs This Site
Sarah Miller is the founder, lead engineer, and author behind Buildcalchub. Sarah has 15 years of construction engineering experience across residential, commercial, and municipal projects. Every calculator is built and reviewed by Sarah against real jobsite experience.
Sarah is based in Dover, Delaware. The site serves construction professionals and homeowners across the United States and internationally. All calculators support both imperial (US) and metric units.
Our Engineering Standards
Every calculator is calibrated against these references:
- ASTM — material specifications for aggregate, concrete, and asphalt
- ACI 318 — concrete design standards
- ACI 301 — concrete construction specifications
- AASHTO — highway and pavement design
- IRC (International Residential Code) — residential construction requirements
- IBC (International Building Code) — commercial construction requirements
- OSHA — construction safety standards
When our recommendations conflict with local code, always follow local code. Our calculators provide industry-standard defaults; your building department has final authority.
How We Make Money
Buildcalchub is supported by Google AdSense advertising (maximum 2 ads per page). That's it. We don't:
- Sell your data or email address
- Require account signup
- Push affiliate products
- Accept paid placement in calculators or guides
- Hide premium features behind paywalls
The calculators will always be free. Ad revenue pays for hosting and content updates. If you use ad blockers, that's your choice — we don't fight it.
Corrections and Feedback
Found an error? A density value that doesn't match your supplier? A formula inconsistency? Please report it via our contact page. We update calculators when readers find issues, and we thank contributors in the guide notes.
Contact
Buildcalchub
8252 Chestnut Ct
Dover, DE 19901
United States
Business inquiries, partnerships, corrections: see our contact page.
Legal
Please read our Privacy Policy, Terms of Service, and Disclaimer before using the site's calculators.