Use the form below to do your conversion.
Solution
Step1
Log2111515=Log(11515) ÷ Log(21)
Log(11515)= 4.0612639423002
Log(21)=1.3222192947339
Log2111515=4.0612639423002 ÷ 1.3222192947339
Ans=3.0715509586612
Step2
Alternatively, the logarithm can be calculated like this.