Use the form below to do your conversion.
Solution
Step1
Log213955=Log(3955) ÷ Log(21)
Log(3955)= 3.5971464878337
Log(21)=1.3222192947339
Log213955=3.5971464878337 ÷ 1.3222192947339
Ans=2.7205369806357
Step2
Alternatively, the logarithm can be calculated like this.