Everyday electrical calculations. Made easier.

Built for everyday engineering work

KiloVolt brings frequently used electrical calculations together in one free, easy-to-access toolkit. Whether you are checking voltage drop, sizing conductors, calculating transformer currents, reviewing fault levels or planning a photovoltaic system, the goal is simple: find the tool you need, enter your values and get a clear result without unnecessary steps.

Need to see how a result was obtained? Each tool provides its applicable formulas, assumptions and guidance, so you can review the calculation instead of relying on an unexplained number.

About the author

I’m Athanasios Proios, an electrical engineer and graduate of the Aristotle University of Thessaloniki. I built KiloVolt for my own daily work, to keep the calculations I used to do by hand or on a calculator in one place. I show the formulas and assumptions because I want to be able to check a result myself, and so can you. These are screening tools: they don’t replace the standards or your own judgement on a real installation. Corrections and suggestions are welcome: message me on LinkedIn ↗

A growing toolkit

I continue to refine the calculators, engineering references and guides, with the aim of making KiloVolt useful for electrical engineers, electricians, technicians and students in their day-to-day work. The site follows an IEC/EN-oriented approach and is available in English and Greek.

Engineering responsibility

KiloVolt supports quick calculations, preliminary checks and technical learning. It does not replace site-specific verification, applicable standards, manufacturer documentation or professional engineering judgment. Where a result depends on assumptions or incomplete data, consult those limitations before using it in a final design or commissioning decision.