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Roofing Cost Calculator for Roofing Contractors, Built by Chatting with Claude

This roofing cost calculator gives homeowners a live price estimate the moment they enter their roof size, pitch, and material. Seeing a real number instantly means more of them book the inspection instead of bouncing. You build it by chatting with Claude, keep your exact Excel pricing, and the first form is free.

Build yours free →Get the build prompt

The form your customers fill out

A live calculator, not a static quote request. Your customer enters their details and watches the number update on the spot, which is what turns a browser into a booked job.

What it calculates

Why it closes more deals

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A live number closes deals

Customers who see a real estimate the second they enter their details are far likelier to book than ones told to call for a quote. The number is the hook.

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Runs your most complex spreadsheet

Multi-tab workbooks, lookup tables, tiered rates, conditional line items, the lot. If the math runs in Excel, CalcForms runs it behind a clean form.

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Update it by chatting

Prices move. Ask Claude to change a rate, add an option, or insert a step and the live form updates in seconds. No developer, no redeploy.

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Backtest before you publish

Run your last 20 real jobs through it and tune the formula until the live estimate matches what you actually charge. Ship it once it lines up.

How this form was built

No template builder and no code. One message to Claude with the CalcForms connector switched on:

✦ Claude with the CalcForms connector
Build me a roofing cost calculator. Inputs: roof square footage, pitch (low/standard/steep), material (asphalt 3-tab $4.50/sqft, architectural $6.25/sqft, standing seam metal $12/sqft), layers to tear off, and stories. Multiply area by the material rate, add a 1.0/1.15/1.30 pitch multiplier, add a 12% waste factor, add $1.10/sqft per tear-off layer, and add 8% labor for each story above one. Show the homeowner an estimated roof replacement price.
Done. I built Roofing Cost Calculator with your pricing and deployed it to forms.badabingapp.cc. The math runs server-side and every submission is saved with the inputs and email. Want to add a field or change a rate? Just tell me.

Build this exact form

CalcForms is a connector you add to Claude once. After that you build and edit forms just by chatting.

  1. Add CalcForms to Claude. Open the Add custom connector dialog, name it Calcforms, and paste https://forms.badabingapp.cc. One time, about 60 seconds.
  2. Paste the prompt below. Claude builds the form, wires in your math, and hands you a live URL.
  3. Share it, then tweak by chatting. Put it on your site or send the link. Change a rate or add a field later just by asking.
Copy this prompt into Claude

"Build me a roofing cost calculator. Inputs: roof square footage, pitch (low/standard/steep), material (asphalt 3-tab $4.50/sqft, architectural $6.25/sqft, standing seam metal $12/sqft), layers to tear off, and stories. Multiply area by the material rate, add a 1.0/1.15/1.30 pitch multiplier, add a 12% waste factor, add $1.10/sqft per tear-off layer, and add 8% labor for each story above one. Show the homeowner an estimated roof replacement price."

Example run: 2,200 sqft architectural shingle, standard pitch, 1 layer tear-off, 2-story: about $20,400 estimated replacement price.

New to connectors? A connector (an MCP server) is a secure link between Claude and an app. The CalcForms connector lets Claude build, deploy, and update real calculator forms for you, all from the chat window.

Formulas it supports

FAQ

Can it handle different shingle brands and tiers?
Yes. Keep a lookup table of your material rates and the calculator pulls the right price per square automatically. Update any rate later by asking Claude.
Does it account for steep or cut-up roofs?
It applies a pitch multiplier for steep slopes, and you can add complexity factors for valleys, hips, and dormers in the same formula.
Will the estimate match what I actually quote?
Backtest it against your last 20 jobs before you publish. Adjust the rates and waste factor until the live number lines up with your real quotes.
Can I capture the homeowner as a lead?
Every submission saves the inputs and email, so you get a pre-qualified lead with their roof size and material already calculated.

Build yours in the next 10 minutes.

Your first form is free. No credit card.

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