Square Root Calculator

This online Square Root Calculator helps you to find the square & nth root of any positive as well as negative numbers. Also, this sqrt calculator shows you whether the given number is a perfect square root or not. For example; 4, 9, & 16 are the perfect squares of 2, 3, & 4 respectively.

This context is packed with lots of helpful information, including the square root formula, how to find it sqrt step-by-step & much more. Read on!

You can check an online factor calculator if you need to determine the factors and the pairs of factors of positive or negative integers.

What is Square Root?

In mathematical terms, a square root of a number ‘x’ is referred to as a number ‘y’ such that y² = x; in other words, a factor of a number that, when multiplied by itself equal to the original number.

For example, 3 and −3 are said to be as the square roots of 9, since 3² = (-3)² = 9. You can try the square root calculator to simplify the principal square root for the given input.

The given formula is considered to represent the square root:

\( \sqrt[n]{x} = x^{\frac{1}{n}} \)

Remember that every nonnegative real number ‘x’ has a unique nonnegative square root that is known as principal square root, it is denoted by \( \sqrt {x} \), where \(\sqrt\) symbol called the radical sign or radix. For example, the principal square root of 49 is 7, which denoted \(\sqrt {49} = 7\). However, the number whose square root is being considered is said to be the radicand. So, you can check the complex or imaginary solutions for square roots of negative real numbers by using square roots calculator.

Square Root Illustration

Also, you can try our online exponent calculator that helps you to calculate the value of any number raised to any power.

How to Find Square Root (Step-by-Step)?

To prepare for the calculation of square root, then you should remember the basic perfect square root. As the sqrt of

1, 4, 9, 16, 25, 100 is 1, 2, 3, 4, 5, and 10.

To find the \( \sqrt{25} \), let's see!

\( \sqrt{25} = \sqrt {5 \times 5}\)

\( \sqrt{25} = \sqrt {5^2}\)

\( \sqrt{25} = 5 \)

These are the simplest square roots because they give every time an integer, but what when a number has not a perfect square root?

For Example, you have to estimate the sqrt of 54?

As you know \( \sqrt{49} = 7\) & \( \sqrt{64} = 8\). So, the \( \sqrt{64} \) is between the 8 and 7.
The number 54 is closer to 49 than 64. So, you can try guessing \( \sqrt{54} = 7.45\)
Then, by squaring 7.45, (7.45)² = 55.5 which is greater than 54. So you should try the smaller number. Let’s take
7.3
By taking the square of 7.3, it gives 53.29 which is close to 54.
It means the square root of 54 is between 7.3 & 7.4

Let’s take another example:

Example:

What is a square root of 27?

Solution:

As the 27 is not the perfect square of any number. So, we have to simplify it as:

\( \sqrt {27} = \sqrt {9 \times 3}\)

\( \sqrt {9} \times \sqrt {3} \)

\( \sqrt {9} \times \sqrt {3} = \sqrt [3]{3}\)

Our square root calculator considers these formulas & simplification techniques to solve the sqrt of any number or any fraction.

Square Root of Fractions

The sqrt of fractions can be determined by the division operation. Look at the following example:

\( \left(\frac{a}{b}\right)^{\frac{1}{2}} = \frac{\sqrt{a}}{\sqrt{b}} = \sqrt{\frac{a}{b}} \)

Where \( \frac {a}{b}\) is any fraction. Let’s have another example:

Example:

What is square root of \( \frac {9}{25}\)?

Solution:

\( \sqrt{\frac{9}{25}} = \frac{\sqrt{9}}{\sqrt{25}} \)

\( \frac{\sqrt{9}}{\sqrt{25}} = \frac{3}{5} = 0.6 \)

Square Root of Negative Numbers

At school level, we have been taught that the square root of negative numbers cannot exist. But, the mathematicians introduce the general set of numbers (Complex numbers). As:

x = a + bi

Where, a is real number & b is an imaginary part. The iota (i) is a complex number with a value:

\( i = \sqrt {-1} \)

Let’s have some examples:

The sqrt of -4 = \(\sqrt {-4}\) = \(\sqrt {-1 \times 9}\) = \( \sqrt {-1} \sqrt {9}\) = 3i

What is the square root of -17 = \( \sqrt {-17}\) = \( \sqrt {-1 \times 17}\) = \( \sqrt{-1} \sqrt {17}\) = 17i

How to Use the Square root Calculator?

There's no doubt, finding square root manually quite complex, but becomes easy with this roots calculator. Hold the given steps and get the exact sqrt calculations:

Read on!

Inputs:

First of all, hit the tab to choose the square root or nth root for any number.
Very next, enter the number for which you want to do the calculation according to the selected option.
Lastly, click on "CALCULATE" button.

Outputs:

Once done, the calculator shows:

Square root of the number.
The nth root of the number.
Step-by-Step calculation
Tells either the number has a perfect square root or not

Note:

It doesn't matter at all what values you entered, this online square roots calculator simplifies the given number accurately by using the sqrt maths formula.

Frequently Ask Questions (FAQ’s):

Can a number have more than one square root?

Yes, the positive numbers have more than one sqrt, one is positive & the other is negative.

Is the \(\sqrt{2}\) a rational number?

No, it is an irrational number.

Reason:

The square root of 2 cannot be expressed as the quotient of two numbers.

Are square roots rational?

Some roots are rational while others are irrational.

How to find the square root without a calculator?

Step 1: Estimate: first of all, estimate the square root. You need to get as close as you can by simply determining two perfect square roots the given number is between
Step 2: Divide: now, you need to divide the given number by one of those square roots
Step 3: Average: you need to take the average of the result of step 2 as well as the root
Step 4: Now, you have to use the result of step 3 to repeat steps 2 & 3 until you get a number, which is accurate enough for the solution.

How to get rid of a square root in an equation?

To solve an equation that has a square root in it:

First, you need to isolate the square root on one side of the given equation
Then, simply square both sides of the equation and keep solving for the variable
Finally, verify your work, all you need to substitute the obtained value of variable into the original equation

Square Root Table – Perfect Squares:

x	√x
1	1
2	1.41421
3	1.73205
4	2
5	2.23607
6	2.44949
7	2.64575
8	2.82843
9	3
10	3.16228
11	3.31662
12	3.4641
13	3.60555
14	3.74166
15	3.87298
16	4
17	4.12311
18	4.24264
19	4.3589
20	4.47214
-15	3.87i
-18	4.24i
-32	5.66i
-49	7i
-64	8i
73	8.54
-81	9i
194	13.93
200	14.14
205	14.32
208	14.42
325	18.03
360	18.97
1500	38.73
2000	44.72
2100	45.83

Square Root Table – Imperfect Squares:

Find the square root of...	The square root
²√ 1	1.0000000000
²√ 2	1.4142135624
²√ 3	1.7320508076
²√ 4	2.0000000000
²√ 5	2.2360679775
²√ 6	2.4494897428
²√ 7	2.6457513111
²√ 8	2.8284271247
²√ 9	3.0000000000
²√ 10	3.1622776602

End-Note:

Square roots are frequently appearing in mathematical formulas including quadratic formulas, discriminant as well as in many physics laws. Further, it is used in many places in daily life, used by engineers, carpenters construction managers, medical assistants, and many others. When it comes to calculations for a large number, it is very tricky & complex. Simply, try the online square root calculator that helps you to determine the square root according to your need.

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EN	TR	ID
PL	DE	JA
KO	CS	PT
FR	ES	IT
RU	AR	FI
NO	SL

Square Root Calculator