Use the form below to do your conversion.
Solution
Step1
Log219965=Log(9965) ÷ Log(21)
Log(9965)= 3.9984773030365
Log(21)=1.3222192947339
Log219965=3.9984773030365 ÷ 1.3222192947339
Ans=3.0240651599636
Step2
Alternatively, the logarithm can be calculated like this.