Use the form below to do your conversion.
Solution
Step1
Log2011515=Log(11515) ÷ Log(20)
Log(11515)= 4.0612639423002
Log(20)=1.301029995664
Log2011515=4.0612639423002 ÷ 1.301029995664
Ans=3.1215759481607
Step2
Alternatively, the logarithm can be calculated like this.