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About This Tool
The Square Root Calculator computes the nth root of any number. By default it calculates the square root, but you can specify any root index — cube root, 4th root, 5th root, and so on.
Root extraction is a fundamental mathematical operation used in geometry (calculating distances), statistics (standard deviation), engineering, and everyday computations like finding the side length of a square given its area.
Enter a number and optionally change the root index. The calculator shows the result, verifies it by raising the result back to the power, and handles negative numbers with odd roots correctly.