Questions about a calculator, a formula, or the site? Send a short email. It is the fastest way to report a wrong number or a confusing input.
Email: millsites.contact@gmail.com
Questions, corrections, or tool requests are welcome. We usually reply within a few days.
For example: “Voltage drop calculator — 12 AWG, 150 ft, 16 A at 240 V shows 3.1%; my hand calculation gives 2.9%.” A message like that lets us reproduce the issue and correct the page quickly.
We can fix wrong numbers, unclear labels, broken pages, and missing units, and we read suggestions for new calculators. We cannot review your specific project, approve a design, or give professional, legal, or code advice — the calculators are planning aids, and the limits section on each page explains what is outside the model.
Your email address is used only to reply and is never published. See Privacy for details.