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How to Get Square Root Symbol on Calculator

Reviewed by Calculator Editorial Team

Finding the square root symbol on different types of calculators can be confusing, especially if you're not familiar with the specific model. This guide explains how to access the square root function on scientific, graphing, online, and mobile calculators, as well as using keyboard shortcuts.

Scientific Calculators

Scientific calculators typically have a dedicated square root button. Here's how to find it:

Casio FX Series

  1. Locate the "√x" button on the calculator. It's usually in the top row, near the "x²" button.
  2. Enter your number, then press the "√x" button to calculate the square root.

Texas Instruments TI-30XS

  1. Find the "√" button, which is in the top row next to the "x²" button.
  2. Enter your number, then press the "√" button to get the result.

Tip: If you can't find the square root button, check if your calculator is in the correct mode (usually "Math" or "Scientific").

Graphing Calculators

Graphing calculators like the TI-84 Plus have more advanced functions but still include the square root symbol.

TI-84 Plus

  1. Press the "2nd" button, then the "√" button to access the square root function.
  2. Enter your number, then press ")" to calculate the square root.

Casio ClassPad 330

  1. Find the "√" button in the math function menu.
  2. Enter your number, then select the "√" function to get the result.

Online Calculators

Most online calculators have a square root button clearly labeled with the √ symbol.

Google Calculator

  1. Type your number followed by "^(1/2)" to calculate the square root.
  2. Example: "9^(1/2)" will return 3.

Desmos Calculator

  1. Use the "sqrt()" function by typing "sqrt(9)" to get the square root of 9.

Formula: √x = x^(1/2)

Mobile Apps

Popular calculator apps have the square root function easily accessible.

Calculator+ (Android)

  1. Tap the "√" button in the scientific mode.
  2. Enter your number, then tap "=" to get the result.

Calculator (iOS)

  1. Switch to scientific mode, then tap the "√" button.
  2. Enter your number, then tap "=" to calculate the square root.

Keyboard Shortcuts

If you're using a computer keyboard, you can use these shortcuts:

Windows Calculator

  1. Press "Alt + 2" to insert the square root symbol (√).
  2. Then type your number and press "=" to calculate.

Mac Calculator

  1. Press "Option + V" to insert the square root symbol (√).
  2. Enter your number, then press "=" to get the result.

FAQ

What if I can't find the square root button?
Check if your calculator is in scientific mode. Some calculators hide advanced functions in different modes.
Can I calculate square roots without a calculator?
Yes, you can use the formula √x = x^(1/2) or use long division methods for manual calculation.
Why is the square root symbol important?
The square root symbol (√) is essential in mathematics for finding the principal (non-negative) square root of a number.