Use the form below to do your conversion.
Solution
Step1
Log21487=Log(487) ÷ Log(21)
Log(487)= 2.6875289612146
Log(21)=1.3222192947339
Log21487=2.6875289612146 ÷ 1.3222192947339
Ans=2.0325894289385
Step2
Alternatively, the logarithm can be calculated like this.