Use the form below to do your conversion.
Solution
Step1
Log21131=Log(131) ÷ Log(21)
Log(131)= 2.1172712956558
Log(21)=1.3222192947339
Log21131=2.1172712956558 ÷ 1.3222192947339
Ans=1.6013011639509
Step2
Alternatively, the logarithm can be calculated like this.