Use the form below to do your conversion.
Solution
Step1
Log211987=Log(1987) ÷ Log(21)
Log(1987)= 3.2981978671098
Log(21)=1.3222192947339
Log211987=3.2981978671098 ÷ 1.3222192947339
Ans=2.4944408845384
Step2
Alternatively, the logarithm can be calculated like this.