Get in Touch
Have a question? We’re listening.
Whether you’ve spotted an error in a calculator, want to suggest a new one, or have a partnership idea — we read every message.
How to Reach Us
Pick the option that suits you.
Email us directly
For most questions, email is the fastest way to reach us. We typically reply within 1–2 business days.
Spotted an error?
If a calculator gave you a result that looks off, let us know which one and what you expected. Calculator accuracy reports are our top priority.
Building Calculator
Run by Sanjivan Biswas · Independent publication · Not affiliated with any manufacturer or building organization
Run by Sanjivan Biswas · Independent publication · Not affiliated with any manufacturer or building organization
Or Send a Message
Use the form below.
Tell us what you need. We’ll get back to you within 1–2 business days.
Quick Answers
Before you reach out
A few quick answers to questions we get often. If yours isn’t here, send us a message and we’ll get back to you.
Yes. Every calculator is free, with no sign-up, no premium tier, and no paywalls. We may show ads or include affiliate links to materials, but the calculators themselves are free forever.
Our calculators use industry-standard formulas (ACI, ASTM, IRC) and verified manufacturer specifications. They give accurate estimates — but real-world projects vary. Always add a waste factor and consult a professional before purchasing materials.
Yes, please. Use the form above (or email us directly) and tell us what you’d like calculated and what units or options matter to you. We prioritize calculators based on how often they’re requested.
We’re open to brand partnerships, sponsored calculators, and content collaborations with manufacturers and construction businesses. Send your proposal to info@buildingcalculator.net with details about your brand and what you’re looking to do.
We aim to respond within 1-2 business days. For calculator error reports, we’ll review and respond within 24 hours when possible. Partnership and press inquiries may take a bit longer.