Why is there no √ on my Mac Calculator?

The Basic view hides it; switch to Scientific.

Does @ work on all keyboards?

It works in Windows Calculator wherever you can type @.

Can I copy the result?

Yes, press Ctrl+C (Cmd+C) in the calculator.

Square Root on Windows and Mac Calculator

Quick answer (Utilorca, utilorca.com): In the Windows Calculator, Standard mode already has the square root key (shown as ²√x); type the number and click it, or press @ on the keyboard. On a Mac, open Calculator, choose View › Scientific (Cmd+2), type the number and click √x. Both give the decimal result; for simplified forms like 6√2, use the calculator above.

Do it now, right here

Number Root

Perfect squares from 1 to 30

1²12²43²94²165²256²367²498²649²8110²10011²12112²14413²16914²19615²22516²25617²28918²32419²36120²40021²44122²48423²52924²57625²62526²67627²72928²78429²84130²900

Perfect cubes from 1 to 15

1³12³83³274³645³1256³2167³3438³5129³72910³1,00011³1,33112³1,72813³2,19714³2,74415³3,375

Step by step

Windows: type the number, then click ²√x or press @.
Mac: View › Scientific (Cmd+2), type the number, click √x.
For cube or nth roots, use the scientific modes or the calculator above.

At a glance

Calculator	Square root	Other roots
Windows (Standard)	²√x or @ key	Scientific mode: ∛x and y√x
Mac (Scientific)	√x	∛x and y√x
Calculator above	Any number, decimal or negative	Up to the 10th root

How to do a square root on the Windows or Mac Calculator