The Online Cable Optimizer

What is Cableizer?

Cableizer is a software package for the design of power cable systems using electrical, mechanical, thermal and environmental calculations.

Cableizer is completely web-based because we believe SaaS is the future: It is cost effective, accessible anywhere, easily customisable, has improved interoperability, offers easier installation and maintenance, and offers tighter security than desktop applications.

  • We started in June 2015 and are developing heavily.
  • We offer monthly subscriptions for a fair price.
  • We are a small team working in the cable business for years.


  • Software guided design of cables up to 500 kV!
  • Cable calculations including mass, heat of combustion, CO2, price, etc.
  • System calculations of current rating and cable pulling
  • Environmental calculations incl. magnetic fields and soil temperature rise
  • Web-based without any installation or dongle but with automatic updates
  • Work together directly with customers and suppliers using share links
  • Support from engineers with many years of practical experience

Check out all the features.

Latest News

Download datasheets and reports as spreadsheets (2021-01-19)
It is now possible to download datasheets and reports both in PDF and CSV format, with the later being your preferred solution if you want to access and manipulate your data in a spreadsheet, for example in Microsoft Excel.

Improved security, performance, and reliability with Cloudflare (2021-01-10)
During the last week of 2020, we have done a lot of maintenance work and upgrades on our server infrastructure to make Cableizer safer, more reliable and more performant. All our traffic is now protected and accelerated through Cloudflare.

Cable pulling in vertical shafts (2020-12-22)
The installation of HV cables in vertical shafts is very dangerous. You must be fully aware of the risks involved and the installation must be handled by professionals. The Cableizer cable pulling module cannot be used to determine if it’s safe or not.

Error, warning, and info messages in our editors (2020-12-15)
Learn what kind of errors, warnings, and infos we display in our editors. Did you know that you can click on a message and directly go to the relevant input?

View all news