Use the form below to do your conversion.
Solution
Step1
Log219509=Log(9509) ÷ Log(21)
Log(9509)= 3.9781348473983
Log(21)=1.3222192947339
Log219509=3.9781348473983 ÷ 1.3222192947339
Ans=3.0086800754173
Step2
Alternatively, the logarithm can be calculated like this.