Built by a developer who needed better roofing tools

RoofersCalc is a free collection of roofing calculators designed for both working contractors and homeowners tackling their first roof project.

The story behind it

My name is Tyler. I'm a developer from Florida who enjoys building things that improve processes and increase efficiency — software, tools, systems, anything that makes a workflow faster and less error-prone.

The idea for RoofersCalc came from watching a close friend work on his own roof. He was doing the math by hand — rise, run, pitch multiplier, squares, waste factor — pulling up different websites for each calculation, cross-referencing numbers, second-guessing himself. It was exactly the kind of fragmented, inefficient process that I enjoy solving.

So I built it. One place, every calculation a roofer actually needs — from pitch and angle to ice and water shield quantities, ridge cap, nails, underlayment, and material costs. Each calculator is designed to give accurate results whether you're a contractor who knows every measurement off the top of your head, or a homeowner measuring your roof for the first time.

I've always enjoyed writing code and solving problems. RoofersCalc is the result of combining that with a genuine need I saw up close.

What's coming next

Beyond the calculators, I'm currently developing roofing estimation software aimed at contractors who handle multiple jobs and need accurate, fast estimates without manual number-crunching for every project.

The goal is to change the way roofing estimates are done — reducing the time between measuring a job and sending a quote, minimizing material order errors, and giving contractors a clearer picture of each project's scope before work begins.

RoofersCalc is the foundation. The free tools here are the starting point — a way to prove the concept and build something genuinely useful for the people doing the work.

How the calculators are built

Every formula on RoofersCalc is based on standard roofing math — the same calculations used in the field and in manufacturer installation guidelines. Pitch multipliers use the trigonometric rise-over-run relationship. Ice and water shield quantities follow IRC code minimums for eave depth by climate zone. Waste factors are based on published industry guidance for different roof complexities.

The calculators are intentionally straightforward. No account required, no paywall, no upsells. You put in your numbers and get the answer.

Available calculators

Get in touch

Have a question about a calculator, found a number that doesn't look right, or want to talk about the upcoming estimation software? Reach out directly.