Square Root Calculator (√x)
Compute √x for x ≥ 0. Also shows x² for quick checks.
Inputs
√x
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Frequently asked questions
- What is a square root?
- √x is the non-negative number y such that y² = x. Example: √144 = 12 because 12² = 144.
- Why are negative inputs rejected?
- Real square roots are undefined for x < 0. Use complex numbers elsewhere if you need √(−1) style results.
- Does the page also show x²?
- Yes—an extras line often shows the square of your input so you can sanity-check round-trips (√x then square).
- How precise is the result?
- It uses standard floating-point math in the browser. Perfect squares return exact integers when representable.
- How is this different from an exponent calculator?
- Square root is x^(1/2). An exponent tool covers arbitrary powers; this page focuses on √x.