Use the form below to do your conversion.
Solution
Step1
Log201987=Log(1987) ÷ Log(20)
Log(1987)= 3.2981978671098
Log(20)=1.301029995664
Log201987=3.2981978671098 ÷ 1.301029995664
Ans=2.5350667379706
Step2
Alternatively, the logarithm can be calculated like this.