Contact

Have a question, found a problem with a calculator, or want to suggest an improvement? We'd like to hear from you.

Calculator feedback

If you're reporting a calculation issue, please include:

  • the calculator name;
  • the values you entered;
  • the result you received; and
  • what you expected instead.

This helps us reproduce and investigate the issue.

General inquiries

For general questions, website feedback, or other inquiries, contact:

[email protected]

Project-specific advice

Buildcetra provides estimating tools and cannot provide individualized structural engineering, building-code, architectural, or professional construction advice. For safety-, structural-, or code-critical decisions, consult your project documents, manufacturer instructions, local authorities, or a qualified professional.