Use the form below to do your conversion.
Solution
Step1
Log213691=Log(3691) ÷ Log(21)
Log(3691)= 3.5671440451957
Log(21)=1.3222192947339
Log213691=3.5671440451957 ÷ 1.3222192947339
Ans=2.6978460073928
Step2
Alternatively, the logarithm can be calculated like this.