Built by Someone Who
Actually Uses It
Professional material weight calculations, born from two decades in the building materials industry.
What We Offer
Accurate Weights. Real Materials. No Guesswork.
ProWeightCalculator is a free, instant material weight calculator built for professionals in construction, engineering, and architecture.
90+ Verified Materials
Every density value sourced from published engineering references — not guesswork, not AI-generated estimates.
Instant Results
Enter dimensions, get weight. No signup, no waiting, no ads blocking your results. Calculations update live as you type.
Imperial & Metric
Full dual-unit support across every material. Results in both lb/ft³ and kg/m³ — because job sites don't all speak the same language.
Built for Professionals
Designed for contractors loading trucks, engineers specifying materials, and builders estimating project costs.
Material Library
Covering the Materials That Matter
From the heaviest steel plate to the lightest foam board — if you're building with it, we can calculate it.
Who It's For
From Job Sites to Home Projects
Whether you're a general contractor loading a flatbed, a civil engineer specifying materials for a bridge, an architect calculating dead loads, a material supplier quoting freight, or a homeowner planning a backyard patio — accurate weight calculations prevent costly mistakes.
Meet the Founder
Gerald J. Croteau, Jr.
Founder & Builder
"I built ProWeightCalculator because the tools that existed weren't good enough. I use these same calculations in my own business. If the numbers weren't right, I'd know."
I've spent over two decades as President of Stoneyard, Inc., a national manufacturer and distributor of natural stone veneer and masonry products. In that world, knowing exactly how much something weighs isn't trivia — it's the difference between a safe load and an overloaded truck, an accurate bid and a costly mistake.
Digital Equipment Corporation
Started in enterprise computing, building mission-critical systems where accuracy and reliability were non-negotiable.
Co-Founded Target Systems Corp.
Built a CRM software company from scratch. Acquired by Applix, Inc., a public company.
Published 'The Business Internet'
One of the first books on using the World Wide Web for business — before most companies even had a website.
Founded Teen.com
Grew to ~1 million daily visitors. Acquired by a public company in 2000.
President, Stoneyard, Inc.
National manufacturer & distributor of natural stone products. Full P&L responsibility. Still here. Still building.
ProWeightCalculator combines both halves of my career — decades of hands-on experience with building materials and a lifelong passion for building useful technology. This calculator exists because I needed it first.
Get in Touch
Questions? Requests? Errors?
Have a question, found an error, or want to request a new material? I read every message.