Contact Us
Contact Calculator Hub for questions, corrections, privacy requests, or business inquiries.
Last updated: June 22, 2026
Email us
The fastest way to reach Calculator Hub is by email:
calc@hublo.ai
Include the page URL and a short description of your question. For calculator discrepancies, note your inputs and what you expected — that helps us reproduce the issue.
Operator
Calculator Hub is operated by Hublo Technologies Pvt Ltd. We publish free material calculators for US home improvement projects.
Response time
We typically respond within three business days. Privacy-related requests are handled according to our Privacy Policy.
What we cannot help with
We do not provide structural engineering sign-off, permit guidance, or on-site contracting services. For load-bearing concrete, code compliance, or contract pricing, consult a licensed professional in your jurisdiction.