Use the form below to do your conversion.
Solution
Step1
Log215225=Log(5225) ÷ Log(21)
Log(5225)= 3.7180862947831
Log(21)=1.3222192947339
Log215225=3.7180862947831 ÷ 1.3222192947339
Ans=2.8120042640365
Step2
Alternatively, the logarithm can be calculated like this.