StairStringerCalc.com is a dedicated carpentry utility built to eliminate the guesswork from stair framing. We know that in construction, a fraction of an inch determines the difference between a safe, code-compliant staircase and a costly tear-out.
Our mission is to provide contractors, deck builders, and DIYers with a professional-grade tool that goes beyond simple division. Unlike basic calculators, our engine accounts for critical safety factors—including Headroom Clearance, Structural Throat Depth, and Lumber Sizing (2×10 vs 2×12)—ensuring your layout is safe before you make the first cut. Whether you are framing a basement or building a deck, we help you measure twice so you only cut once.