Use the form below to do your conversion.
Solution
Step1
Log201285=Log(1285) ÷ Log(20)
Log(1285)= 3.1089031276673
Log(20)=1.301029995664
Log201285=3.1089031276673 ÷ 1.301029995664
Ans=2.3895706771009
Step2
Alternatively, the logarithm can be calculated like this.