Use the form below to do your conversion.
Solution
Step1
Log213115=Log(3115) ÷ Log(21)
Log(3115)= 3.4934580509952
Log(21)=1.3222192947339
Log213115=3.4934580509952 ÷ 1.3222192947339
Ans=2.6421169808282
Step2
Alternatively, the logarithm can be calculated like this.