Professional Estimating Tools for Contractors
Accurate estimates in minutes, not hours. HVAC, roofing, painting calculators, invoice generation, and AI-powered bid proposals — all in one place.
Contractor Calculator Suite
Everything you need to create accurate estimates, professional invoices, and winning bid proposals.
HVAC Cost Estimator
Calculate heating and cooling installation costs based on square footage, system type, and project specifics.
Open tool →Roofing Estimate Calculator
Estimate roofing costs including materials, labor, and tear-off based on roof size and material choice.
Open tool →Contractor Invoice Generator
Create professional invoices with line items, tax calculations, and print-ready formatting.
Open tool →Painting Estimate Calculator
Calculate paint quantities, labor hours, and total costs for interior painting projects.
Open tool →AI Bid Proposal Generator
Generate professional bid proposals instantly using AI. Customized to your project details and scope.
Open tool →Ready to Win More Jobs?
Join contractors who use ProJobCalc to create accurate estimates and professional proposals that close deals.