Use the form below to do your conversion.
Solution
Step1
Log215165=Log(5165) ÷ Log(21)
Log(5165)= 3.7130703258556
Log(21)=1.3222192947339
Log215165=3.7130703258556 ÷ 1.3222192947339
Ans=2.8082106656921
Step2
Alternatively, the logarithm can be calculated like this.