Use the form below to do your conversion.
Solution
Step1
Log213685=Log(3685) ÷ Log(21)
Log(3685)= 3.5664374921951
Log(21)=1.3222192947339
Log213685=3.5664374921951 ÷ 1.3222192947339
Ans=2.6973116383941
Step2
Alternatively, the logarithm can be calculated like this.