What is the square root of 8?

Answer

2.828427

8 is not a perfect square2.828427² = 2.828427² ≈ 82.828427 × 2.828427 = ≈ 8

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How We Calculated This

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

√8 = 2.828427

Related Calculations

What is the square root of 1?1 (exact)What is the square root of 2?1.414214 What is the square root of 3?1.732051 What is the square root of 4?2 (exact)What is the square root of 5?2.236068

Calculated using verified formulas. Last updated March 2026.