Use the form below to do your conversion.
Solution
Step1
Log211015=Log(1015) ÷ Log(21)
Log(1015)= 3.0064660422492
Log(21)=1.3222192947339
Log211015=3.0064660422492 ÷ 1.3222192947339
Ans=2.2738028814307
Step2
Alternatively, the logarithm can be calculated like this.