Use the form below to do your conversion.
Solution
Step1
Log41991=Log(1991) ÷ Log(4)
Log(1991)= 3.2990712600274
Log(4)=0.60205999132796
Log41991=3.2990712600274 ÷ 0.60205999132796
Ans=5.4796387528603
Step2
Alternatively, the logarithm can be calculated like this.