Use the form below to do your conversion.
Solution
Step1
Log21649=Log(649) ÷ Log(21)
Log(649)= 2.8122446968004
Log(21)=1.3222192947339
Log21649=2.8122446968004 ÷ 1.3222192947339
Ans=2.1269124630089
Step2
Alternatively, the logarithm can be calculated like this.