Use the form below to do your conversion.
Solution
Step1
Log20109=Log(109) ÷ Log(20)
Log(109)= 2.0374264979406
Log(20)=1.301029995664
Log20109=2.0374264979406 ÷ 1.301029995664
Ans=1.5660103954028
Step2
Alternatively, the logarithm can be calculated like this.