Use the form below to do your conversion.
Solution
Step1
Log93991=Log(3991) ÷ Log(9)
Log(3991)= 3.601081727784
Log(9)=0.95424250943932
Log93991=3.601081727784 ÷ 0.95424250943932
Ans=3.7737594921231
Step2
Alternatively, the logarithm can be calculated like this.