Use the form below to do your conversion.
Solution
Step1
Log217315=Log(7315) ÷ Log(21)
Log(7315)= 3.8642143304613
Log(21)=1.3222192947339
Log217315=3.8642143304613 ÷ 1.3222192947339
Ans=2.9225215105025
Step2
Alternatively, the logarithm can be calculated like this.