Use the form below to do your conversion.
Solution
Step1
Log213805=Log(3805) ÷ Log(21)
Log(3805)= 3.5803546611066
Log(21)=1.3222192947339
Log213805=3.5803546611066 ÷ 1.3222192947339
Ans=2.7078372516316
Step2
Alternatively, the logarithm can be calculated like this.