Use the form below to do your conversion.
Solution
Step1
Log151981=Log(1981) ÷ Log(15)
Log(1981)= 3.2968844755385
Log(15)=1.1760912590557
Log151981=3.2968844755385 ÷ 1.1760912590557
Ans=2.8032556573762
Step2
Alternatively, the logarithm can be calculated like this.