About FieldLab

Who Built This

FieldLab is built by Jeffrey Lin — an engineer who got tired of watching tradespeople overpay for tools that should be free.

Jeffrey holds dual degrees from Harvey Mudd College in General Engineering (Dynamics focus) and Mathematical Economics. His engineering background spans aerospace, mechanical, and biomedical systems — including a U.S. patent for hemorrhage control and tissue repair (US 9,204,957). The math and physics behind FieldLab's calculators — load calculations, voltage drop, pipe offsets, structural spans — come from the same engineering fundamentals.

He's not a licensed electrician or pipefitter. But the formulas don't care who runs them. They care about being correct, validated against the right code tables, and fast enough to use on a jobsite between tasks. That's what FieldLab is built to do.

What FieldLab Is

FieldLab is a free resource site for licensed tradespeople — electricians, carpenters, pipefitters, and structural builders.

Every calculator on this site is free, works without an account, and doesn't ask for your email before showing you results. The how-to guides are written for people who already know what they're doing and just need to check the math or reference a code table.

What We're Building Next

FieldLab is developing native iOS apps for each trade: Electrician NEC Calculator, Framing & Carpentry Calculator, Pipefitter Calculator, and Structural Span Calculator.

The pricing model is simple: pay once, own it forever. No subscription. No monthly fee. No "premium tier" that locks the useful features behind a paywall.

If you've used Construction Master Pro or ElectriCalc Pro lately, you already know why this matters. Trade tools are bought, owned, and used until they wear out. Software trade tools should work the same way.

Contact

Have a question, found a bug in a calculator, or want to suggest a tool we should build? Reach out at contact@builtbyfieldlab.com.

You can also find Jeffrey on LinkedIn.