RoofCalcs.com provides free roofing and gutter calculators including material quantities, water volume, equipment sizing, operating costs, and maintenance scheduling tools. With 30 calculators across 4 categories — from chlorine dosage and pH adjustment tools to pump sizing guides and cost estimators — we cover the tools homeowners and contractors actually need, without the clutter.
Our mission is simple: give homeowners and roofers accurate, fast, and free calculation tools with no barriers. There are no accounts to create, no paywalls to hit, and no personal data to hand over. You open a calculator, enter your roof details, and get your answer. That's it.
Every calculator on RoofCalcs uses standard roofing industry formulas, established water chemistry equations, and real-world equipment specifications. We build each tool with care for both accuracy and speed, so the math runs entirely in your browser with instant results.
Whether you're calculating chlorine dosage for your weekly maintenance, sizing a pump for a new roof, estimating material costs, or figuring out your gutter sizing, RoofCalcs is here to help. We always recommend consulting a licensed roofing contractor for critical decisions.
Free, fast, and built for every homeowner and contractor.