Use the form below to do your conversion.
Solution
Step1
Log215405=Log(5405) ÷ Log(21)
Log(5405)= 3.7327956982893
Log(21)=1.3222192947339
Log215405=3.7327956982893 ÷ 1.3222192947339
Ans=2.8231290476218
Step2
Alternatively, the logarithm can be calculated like this.