Use the form below to do your conversion.
Solution
Step1
Log1561=Log(61) ÷ Log(15)
Log(61)= 1.7853298350108
Log(15)=1.1760912590557
Log1561=1.7853298350108 ÷ 1.1760912590557
Ans=1.5180198145884
Step2
Alternatively, the logarithm can be calculated like this.