Square Root Calculator
Square roots and any nth root, to high precision. Calculate square roots, cube roots or any nth root of a number with high precision. Handles decimals and shows the exact root expression. Free root calculator.
About the Square Root Calculator
The square root asks: which number times itself gives this one? This calculator answers instantly for any non-negative input, to a dozen significant digits, and generalises to cube roots, fourth roots or any nth root you specify. Negative inputs to odd roots are handled correctly (the real root exists), and the expression evaluated is displayed with each result so you can confirm exactly what was computed.
How to use the Square Root Calculator
- Enter the number.
- Choose 2 for square root or set a custom n.
- Read the high-precision result.
- Verify the shown expression for your records.
Key features
- Square root and any nth root
- 12 significant digits of precision
- Handles decimals and negative odd-root inputs
- Shows the root expression evaluated
Why is the square root of a negative number not real?
What is the difference between √x and x^(1/2)?
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