Use the form below to do your conversion.
Solution
Step1
Log20685=Log(685) ÷ Log(20)
Log(685)= 2.8356905714924
Log(20)=1.301029995664
Log20685=2.8356905714924 ÷ 1.301029995664
Ans=2.1795735539865
Step2
Alternatively, the logarithm can be calculated like this.