Use the form below to do your conversion.
Solution
Step1
Log213539=Log(3539) ÷ Log(21)
Log(3539)= 3.5488805626375
Log(21)=1.3222192947339
Log213539=3.5488805626375 ÷ 1.3222192947339
Ans=2.6840332589094
Step2
Alternatively, the logarithm can be calculated like this.