Use the form below to do your conversion.
Solution
Step1
Log215381=Log(5381) ÷ Log(21)
Log(5381)= 3.7308629920465
Log(21)=1.3222192947339
Log215381=3.7308629920465 ÷ 1.3222192947339
Ans=2.8216673337816
Step2
Alternatively, the logarithm can be calculated like this.