Use the form below to do your conversion.
Solution
Step1
Log219691=Log(9691) ÷ Log(21)
Log(9691)= 3.9863685935703
Log(21)=1.3222192947339
Log219691=3.9863685935703 ÷ 1.3222192947339
Ans=3.014907292192
Step2
Alternatively, the logarithm can be calculated like this.