The Faber cable calculator app – the free professional tool.

The Faber cable calculator is an indispensable tool for the day-to-day work of installers and planners. Be it at the building site or in the office: Calculate cable diameters quickly, easily and precisely. All you need is an active internet connection.

What can the Faber cable calculator app do?

The Faber cable calculator app serves to perform simple calculations for dimensioning cable diameters.

Upon entry of the:

- Electric power or rating,
- Cos phi,
- Length/distance

the diameter required for copper and aluminium cables is calculated for the most commonly used cable designs and in consideration of the installation types – in ground (direct, conduit/duct), in buildings (in/on walls, in air, cable conductors, cable trays) – and then directly output as a list with the Faber article numbers. The calculated results are directly linked with the Faber product pages and can be sent to any desired e-mail address.

How does the app work?

After starting the program, enter the basic settings first:
• Nominal voltage
• Maximum permitted voltage drop
(further guidelines and standards may need to be observed here!)
• Cos phi (power factor)
• Power (in kW) or current (in A) to be conducted
• Cable length

Now you can enter the installation type:

• Direct in ground
• In ground (in conduit / in duct, installation type D)
• Building (in / on wall, installation types A1 to C)
• Building (in air, installation types E to G)

If required, you can also enter a different load factor (0.7 or 1). Specific installation types also provide you with an opportunity to select the number of circuits, the ambiant temperature or the installation gap.

The "Calculate" button serves to list every product from the Faber range that meets the entered requirements. The attendant product page is accessible with a single click. The list of matches can be sent to any desired e-mail address.

Please note: If the entered conditions fail to yield a plausible result (e.g. excessive power or cable length), an error message will be displayed. In this case, halve the power, for example, in order to simply connect two of the calculated cables in parallel.

Please contact with any questions or suggestions you may have, or to report errors.


The cable calculator app is free of charge. We are unable to accept any liability for the correctness, completeness and topicality of the information contained in the calculator. The data calculated here are based on formulas of our own creation and fixed variables. We accept no liability for the calculated numerical values. We reserve the right to make changes at any time.

Do you like our service?
We look forward to your review of our app. Thank you!

About Faber Kabel.

Faber Kabel is a full-range supplier of cables and wires and one of Europe's biggest cable distributors. Products are shipped worldwide. Well-planned and sophisticated logistics enable fastest delivery. The company is characterized by a large variety of products as well as a tailored customer service. Special cables, special packaging or exact lengths – Faber Kabel offers extensive additional services and opportunities to its customers.

Please visit our website at
Find out more about our products and comprehensive services here.

What’s New

Version 2.0.11

- updated imprint, privacy policy and contact details
- design adjustments

Ratings and Reviews

4.1 out of 5
7 Ratings
7 Ratings
Thomas- ,

Funktioniert jetzt, erste Versuche ok.

Ae es länger nicht probiert, funktioniert jetzt. App ist ein Hilfsmittel, Danke.

Developer Response ,

Zunächst einmal vielen Dank, dass Sie sich Zeit genommen haben, unsere App zu bewerten.
Leider ist es uns nicht gelungen Ihr Problem nachzustellen.
Besteht der Fehler weiterhin senden Sie uns bitte eine Fehlerbeschreibung per E-Mail an

Business research ,

Funktioniert einwandfrei

Die App überzeugt auf ganzer Linie

Developer Response ,

Vielen Dank für Ihre Bewertung!

Telefisch ,

Völlig daneben

Kein Ergebnis wenn die Eingaben kein entsprechendes Produkt ergeben.
Nichtmal ein Hinweis wo man eventuell die Werte korrigieren könnte.
Unfassbar schlechte Eingabemaske.

Einfach nur Mist.

Developer Response ,

Vielen Dank für Ihr Feedback.
Die App wurde bereits aktualisiert, somit sollte Ihr Problem behoben sein. Besteht der Fehler weiterhin senden Sie uns bitte eine Fehlerbeschreibung per E-Mail an


Klaus Faber AG
7.4 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.


English, German

Age Rating
Rated 4+
© 2018 Klaus Faber AG


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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