About Trusty Calculator
Learn who operates Trusty Calculator and why we publish transparent construction tools.
How this applies
Trusty Calculator is operated by YunFanLabs. We build focused tools that expose formulas, assumptions, units, examples, and primary sources instead of hiding the method behind a result.
Questions and corrections
Contact support@yunfanlabs.com. Include the calculator name and a clear description, but do not send sensitive personal information or confidential project data.