Use the form below to do your conversion.
Solution
Step1
Log213857=Log(3857) ÷ Log(21)
Log(3857)= 3.586249638866
Log(21)=1.3222192947339
Log213857=3.586249638866 ÷ 1.3222192947339
Ans=2.7122956480436
Step2
Alternatively, the logarithm can be calculated like this.