Use the form below to do your conversion.
Solution
Step1
Log213487=Log(3487) ÷ Log(21)
Log(3487)= 3.542451947376
Log(21)=1.3222192947339
Log213487=3.542451947376 ÷ 1.3222192947339
Ans=2.6791712702157
Step2
Alternatively, the logarithm can be calculated like this.