Use the form below to do your conversion.
Solution
Step1
Log219947=Log(9947) ÷ Log(21)
Log(9947)= 3.9976921179417
Log(21)=1.3222192947339
Log219947=3.9976921179417 ÷ 1.3222192947339
Ans=3.0234713211822
Step2
Alternatively, the logarithm can be calculated like this.