What number multiplied by itself equals 256?

Here we will answer: What number multiplied by itself gives 256? In other words, what number times itself will equal 256?

We have identified many different ways of getting the answer to this question:

Algebra Method:
Make an algebra equation and solve for x:

x • x = 256
x = 16

Square Root Method:
Take the square root of 256 to get the answer:

√256 = 16

Exponent Method:
Make the base 256 and the exponent 0.5 to get the answer:

256^0.5 = 16

There you go! Now you know how to calculate "What number multiplied by itself equals 256?"

The bottom line is that 16 times itself equals 256 as illustrated here:

16 x 16 = 256

Multiplied By Itself Equals Calculator
Need to calculate what number multiplied by itself equals another number? Please enter it below.

What number multiplied by itself equals 257?
Learn about the next number on our list here!

Note:
The answer on this page is rounded to the nearest thousandth, if necessary.