Use the form below to do your conversion.
Solution
Step1
Log206415=Log(6415) ÷ Log(20)
Log(6415)= 3.8071966607109
Log(20)=1.301029995664
Log206415=3.8071966607109 ÷ 1.301029995664
Ans=2.9262943002078
Step2
Alternatively, the logarithm can be calculated like this.