Use the form below to do your conversion.
Solution
Step1
Log215561=Log(5561) ÷ Log(21)
Log(5561)= 3.7451528950769
Log(21)=1.3222192947339
Log215561=3.7451528950769 ÷ 1.3222192947339
Ans=2.8324748473971
Step2
Alternatively, the logarithm can be calculated like this.