# How do you calculate log_2 8?

${\log}_{2} 8 = 3$

#### Explanation:

Let $x$ be the unknown value

$x = {\log}_{2} 8$

also

Using exponential form

${2}^{x} = 8$

${2}^{x} = {2}^{3}$

and

$x = 3$

God bless...I hope the explanation is useful.