Use the form below to do your conversion.
Solution
Step1
Log21947=Log(947) ÷ Log(21)
Log(947)= 2.9763499790033
Log(21)=1.3222192947339
Log21947=2.9763499790033 ÷ 1.3222192947339
Ans=2.2510259764453
Step2
Alternatively, the logarithm can be calculated like this.