Use the form below to do your conversion.
Solution
Step1
Log213881=Log(3881) ÷ Log(21)
Log(3881)= 3.58894364274
Log(21)=1.3222192947339
Log213881=3.58894364274 ÷ 1.3222192947339
Ans=2.7143331344762
Step2
Alternatively, the logarithm can be calculated like this.