Square Root of 4
Calculate √4 instantly — exact value, step-by-step explanation, and properties.
√4 =
2
✓ Perfect Square
How to Calculate √4
The square root of 4 is exactly 2. This is because 2 × 2 = 4. Since 4 is a perfect square, its square root is a whole number. You can verify: 2² = 2 × 2 = 4.
√4 = 2 (because 2 × 2 = 4) Properties of √4
Perfect Square?
Yes
4 = 2², so its square root is a whole number.
Decimal Value
2
Exact integer result.
Square Root Symbol
√4
Also written as 4^(1/2) or 4^0.5 in programming.
Frequently Asked Questions
What is the square root of 4?
The square root of 4 is exactly 2. Since 4 is a perfect square, √4 = 2.
Is 4 a perfect square?
Yes, 4 is a perfect square. It equals 2², meaning 2 × 2 = 4.
How do you calculate √4 by hand?
Since 4 is a perfect square, you can find √4 by identifying which integer multiplied by itself equals 4. The answer is 2, because 2 × 2 = 4.
What is √4 in simplified radical form?
√4 = 2. Since it's a perfect square, no radical form is needed.