Use the form below to do your conversion.
Solution
Step1
Log211309=Log(1309) ÷ Log(21)
Log(1309)= 3.1169396465508
Log(21)=1.3222192947339
Log211309=3.1169396465508 ÷ 1.3222192947339
Ans=2.3573545318577
Step2
Alternatively, the logarithm can be calculated like this.