Use the form below to do your conversion.
Solution
Step1
Log219709=Log(9709) ÷ Log(21)
Log(9709)= 3.9871745010875
Log(21)=1.3222192947339
Log219709=3.9871745010875 ÷ 1.3222192947339
Ans=3.0155168034285
Step2
Alternatively, the logarithm can be calculated like this.