Use the form below to do your conversion.
Solution
Step1
Log9991=Log(991) ÷ Log(9)
Log(991)= 2.9960736544853
Log(9)=0.95424250943932
Log9991=2.9960736544853 ÷ 0.95424250943932
Ans=3.1397402912239
Step2
Alternatively, the logarithm can be calculated like this.