Use the form below to do your conversion.
Solution
Step1
Log216439=Log(6439) ÷ Log(21)
Log(6439)= 3.8088184250921
Log(21)=1.3222192947339
Log216439=3.8088184250921 ÷ 1.3222192947339
Ans=2.8806253548573
Step2
Alternatively, the logarithm can be calculated like this.