Square Root Calculator  Real and Imaginary
Square Root Calculator
Please enter a real number, then press 'Calculate': 
Square root result: 

Sqrt(2). Find the square root of 2 or any other real number, positive or negative. Here are the answers to questions like: Square Root Calculator  Real and Imaginary or what is the square root of 2?
What is square root? Definition of square root
A square root of a number 'x' is a number y such that y^{2} = x, in other words, a number y whose square is y. For example, 5 is the square root of 25 because 5^{2} = 5•5 = 25, 5 is square root of 25 because (5)^{2} = (5)•(5) = 25. When writing math, people often use sqrt(x) to mean the square root of x. Read more about square root here: Square Root  Wikipedia and here: Square Root  Wolfram
Square Symbol?
Here is the square root symbol. It is is denoted by √, known as the radical sign or radix.
Square Root Table 1100
Square roots from 1 to 100 rounded to the nearest thousandth.
number  square  square root 

1  1  1.000 
2  4  1.414 
3  9  1.732 
4  16  2.000 
5  25  2.236 
6  36  2.449 
7  49  2.646 
8  64  2.828 
9  81  3.000 
10  100  3.162 
11  121  3.317 
12  144  3.464 
13  169  3.606 
14  196  3.742 
15  225  3.873 
16  256  4.000 
17  289  4.123 
18  324  4.243 
19  361  4.359 
20  400  4.472 
21  441  4.583 
22  484  4.690 
23  529  4.796 
24  576  4.899 
25  625  5.000 
number  square  square root 

26  676  5.099 
27  729  5.196 
28  784  5.292 
29  841  5.385 
30  900  5.477 
31  961  5.568 
32  1,024  5.657 
33  1,089  5.745 
34  1,156  5.831 
35  1,225  5.916 
36  1,296  6.000 
37  1,369  6.083 
38  1,444  6.164 
39  1,521  6.245 
40  1,600  6.325 
41  1,681  6.403 
42  1,764  6.481 
43  1,849  6.557 
44  1,936  6.633 
45  2,025  6.708 
46  2,116  6.782 
47  2,209  6.856 
48  2,304  6.928 
49  2,401  7.000 
50  2,500  7.071 
number  square  square root 

51  2,601  7.141 
52  2,704  7.211 
53  2,809  7.280 
54  2,916  7.348 
55  3,025  7.416 
56  3,136  7.483 
57  3,249  7.550 
58  3,364  7.616 
59  3,481  7.681 
60  3,600  7.746 
61  3,721  7.810 
62  3,844  7.874 
63  3,969  7.937 
64  4,096  8.000 
65  4,225  8.062 
66  4,356  8.124 
67  4,489  8.185 
68  4,624  8.246 
69  4,761  8.307 
70  4,900  8.367 
71  5,041  8.426 
72  5,184  8.485 
73  5,329  8.544 
74  5,476  8.602 
75  5,625  8.660 
number  square  square root 

76  5,776  8.718 
77  5,929  8.775 
78  6,084  8.832 
79  6,241  8.888 
80  6,400  8.944 
81  6,561  9.000 
82  6,724  9.055 
83  6,889  9.110 
84  7,056  9.165 
85  7,225  9.220 
86  7,396  9.274 
87  7,569  9.327 
88  7,744  9.381 
89  7,921  9.434 
90  8,100  9.487 
91  8,281  9.539 
92  8,464  9.592 
93  8,649  9.644 
94  8,836  9.695 
95  9,025  9.747 
96  9,216  9.798 
97  9,409  9.849 
98  9,604  9.899 
99  9,801  9.950 
100  10,000  10.000 
Square root of values around 2
Number  Sqrt 

The square root of 1.6 is  1.265 
The square root of 1.7 is  1.304 
The square root of 1.8 is  1.342 
The square root of 1.9 is  1.378 
The square root of 2 is  1.414 
The square root of 2.1 is  1.449 
The square root of 2.2 is  1.483 
The square root of 2.3 is  1.517 
The square root of 2.4 is  1.549 
The square root of 2.5 is  1.581 