Use the form below to do your conversion.
Solution
Step1
Log215491=Log(5491) ÷ Log(21)
Log(5491)= 3.7396514437094
Log(21)=1.3222192947339
Log215491=3.7396514437094 ÷ 1.3222192947339
Ans=2.8283140766464
Step2
Alternatively, the logarithm can be calculated like this.