Use the form below to do your conversion.
Solution
Step1
Log201561=Log(1561) ÷ Log(20)
Log(1561)= 3.1934029030624
Log(20)=1.301029995664
Log201561=3.1934029030624 ÷ 1.301029995664
Ans=2.4545190454526
Step2
Alternatively, the logarithm can be calculated like this.