Square root calculator

Client

Quick √x for geometry and statistics—principal (non-negative) root only.

How to use

Enter a non-negative number to get √x.

About Square root calculator

Principal square root of a non-negative number—browser-only radical helper. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

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Nearby workflows on Toolcore

  • Nth root calculator — Compute x^(1/n)—cube roots and higher real roots, including odd roots of negatives, locally. when units or numeric output should be checked on a related calculator.
  • Cube root calculator — Real cube root of a number—including negative inputs—computed locally. when units or numeric output should be checked on a related calculator.
  • Pythagorean theorem — Compute hypotenuse c from legs a and b (√(a²+b²))—right-triangle math in your browser. when units or numeric output should be checked on a related calculator.
  • Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. when units or numeric output should be checked on a related calculator.

Common use cases

  • Find side length from area when area is a perfect square.
  • Check radical simplification in algebra.

Common mistakes to avoid

  • Negative input

    Real square roots require x ≥ 0 on this page.

FAQ

Two roots?

Only the principal √ is shown; ± is implied for equations like x² = 4.

nth roots?

Use the nth-root tool for index other than 2.

More tools

Related utilities you can open in another tab—mostly client-side.