Use the form below to do your conversion.
Solution
Step1
Log219961=Log(9961) ÷ Log(21)
Log(9961)= 3.9983029400985
Log(21)=1.3222192947339
Log219961=3.9983029400985 ÷ 1.3222192947339
Ans=3.0239332885421
Step2
Alternatively, the logarithm can be calculated like this.