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This article describes the formula syntax and usage of the SQRT function in Microsoft Excel.

The radical symbol, also known as the square root symbol, is used in math to represent the square root operator and to represent taking the nth-root of an expression.

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Description Returns a positive square root. Syntax SQRT (number) The SQRT function syntax has the following arguments: Number Required. The number for which you want the square root. Remark If …

Jun 18, 2026 · Enter a number to calculate its square root (√x) instantly. See the principal root in seconds for quick checks, homework, or everyday math.

The sqrt () function computes the square root of a number.