Use the form below to do your conversion.
Solution
Step1
Log21115=Log(115) ÷ Log(21)
Log(115)= 2.0606978403536
Log(21)=1.3222192947339
Log21115=2.0606978403536 ÷ 1.3222192947339
Ans=1.558514422351
Step2
Alternatively, the logarithm can be calculated like this.