What is the square root of 4?

The square root of 4 is 2. This is a perfect square. Free instant calculation.

Is 4 a perfect square?

Yes, 4 is a perfect square. Its square root is exactly 2.

√4 = 2

Perfect Square ✓

The square root of 4 is the number that, when multiplied by itself, equals 4.

Since 2 × 2 = 4, the square root is exactly 2. This makes 4 a perfect square.

Need a custom calculation?

Calculated and verified. Free math reference with no ads.