Use the form below to do your conversion.
Solution
Step1
Log218105=Log(8105) ÷ Log(21)
Log(8105)= 3.9087530191845
Log(21)=1.3222192947339
Log218105=3.9087530191845 ÷ 1.3222192947339
Ans=2.9562063076467
Step2
Alternatively, the logarithm can be calculated like this.