Use the form below to do your conversion.
Solution
Step1
Log218687=Log(8687) ÷ Log(21)
Log(8687)= 3.938869821513
Log(21)=1.3222192947339
Log218687=3.938869821513 ÷ 1.3222192947339
Ans=2.9789837716032
Step2
Alternatively, the logarithm can be calculated like this.