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Contact us

Questions, corrections and calculator requests are all welcome.

Email us at contact@instarista.com. We usually reply within two business days.

Helpful details to include

• Reporting a wrong result: which calculator, the numbers you entered, and what you expected to see.
• Requesting a calculator: what you're building and what you need to work out.
• Advertising or partnerships: your company and what you have in mind.

We can't give project-specific engineering or code advice. For that, please talk to a licensed contractor or your local building department.