Use the form below to do your conversion.
Solution
Step1
Log21911=Log(911) ÷ Log(21)
Log(911)= 2.959518376973
Log(21)=1.3222192947339
Log21911=2.959518376973 ÷ 1.3222192947339
Ans=2.2382961652126
Step2
Alternatively, the logarithm can be calculated like this.