What is the square root of 128?

Answer

11.313708

128 is not a perfect square11.313708² = 11.313708² ≈ 12811.313708 × 11.313708 = ≈ 128

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How We Calculated This

√n — the number which, multiplied by itself, equals n

√128 = 11.313708

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Calculated using verified formulas. Last updated March 2026.