About Controls Toolbox

Practical tools for controls and automation work.

Controls Toolbox is a growing set of calculators and references for people who install, program and maintain automated equipment. The aim is simple: answers you can trust, with the working shown, in a page that loads fast on a phone at the machine.

How the calculators are built

Each calculator states the formula it uses and walks through a worked example. Formulas are checked against standard references and published manufacturer or wire-table data before a calculator goes live. Everything is calculated in your browser, so the values you enter stay on your device.

What is coming

More calculators, followed by reference tables, checklists and short guides. If there is a calculation you keep doing by hand, tell us.

Use with care

These tools are for guidance and education. They do not replace engineering judgment, the applicable codes and standards, or manufacturer documentation. Always verify results before relying on them, especially for safety-related work.