Square Root Calculator
Quickly find square roots of numbers
Common Square Roots Reference
√1=1.00000
√2=1.41421
√3=1.73205
√4=2.00000
√5=2.23607
√6=2.44949
√7=2.64575
√8=2.82843
√9=3.00000
√10=3.16228
√11=3.31662
√12=3.46410
√13=3.60555
√14=3.74166
√15=3.87298
√16=4.00000
√17=4.12311
√18=4.24264
√19=4.35890
√20=4.47214
Frequently Asked Questions (FAQs)
The square root of a number is a value that, when multiplied by itself, gives the original number. Example: √9 = 3.
In real numbers, negative numbers do not have square roots. In complex numbers, they do (e.g., √-1 = i).
The square root of 0 is 0, since 0 × 0 = 0.
You can estimate by finding the nearest perfect square. For example, √50 is close to √49 = 7.
Perfect squares are numbers whose square roots are whole numbers, like 1, 4, 9, 16, 25, 36, etc.
