Use the form below to do your conversion.
Solution
Step1
Log1210991=Log(10991) ÷ Log(12)
Log(10991)= 4.041037207867
Log(12)=1.0791812460476
Log1210991=4.041037207867 ÷ 1.0791812460476
Ans=3.7445398747123
Step2
Alternatively, the logarithm can be calculated like this.