I don't know which buttons I have to click or what key combination to type to calculate a cube root.


The n-th root is calculated when you put a subscript number before the square root sign.


To enter subscript numbers with the keyboard hold down Alt while entering the number.


  1. Go to Advanced mode
  2. Press Alt while typing 3
  3. Press

and so on

  • Also you can open a bug report for add a button of n-th root. – Helio Mar 20 '15 at 12:21
  • 6
    X^(1/3) will do the same – Jean-Marie Mar 20 '15 at 13:25
  • 3
    @Helio That would be a feature request, not a bug report ;) – Registered User Mar 20 '15 at 18:40
  • 1
    @CristianMirTienda Were you satisfied with my answer? Then give me a upvote (∧). If I could solve your problem, then it would be nice if you'd mark my answer (✓). – A.B. Apr 18 '15 at 14:36
  • I didn't know that! :-) – Fabby Aug 9 '15 at 20:35

Open Calculator and goto Help>Contents (or simply press F1), You will find help for Powers and Roots:-

enter image description here

Where you will find information that:

n-th roots can be calculated by putting a subscript number before the root sign.

The superscripting and subscripting numbers can be put by holing Ctrl and Alt respectively!.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.