Contact Us
Have a question, found a bug, or want to suggest a new calculator? Fill out the form below and we'll get back to you as soon as possible. Your feedback directly shapes what gets built next.
About This Site
Home Project Calculator is a library of free construction and material estimation tools built for homeowners, DIYers, and contractors. Each calculator is based on standard industry formulas with clearly documented assumptions — so you know exactly how results are produced.
Learn more on our About page or review the calculation methods on our Methodology page.
Support & Response Time
For support, questions, or feedback, use the contact form above or email us directly:
support@homeprojectcalculator.com
We typically respond within 1–2 business days.
Methodology & Accuracy
Every calculator on this site is built using established construction estimating practices, industry-standard formulas, and real-world measurement methods. Assumptions, calculation logic, and methodology are documented transparently and reviewed regularly.
See our Methodology page for full details.
Important Disclaimer
Our calculators provide general estimates for planning and budgeting purposes only. Actual material requirements and costs may vary based on site conditions, product specifications, local standards, and supplier pricing.
For final purchasing decisions or safety-critical work, verify measurements and requirements with a qualified contractor, engineer, or supplier.