Use the form below to do your conversion.
Solution
Step1
Log215197=Log(5197) ÷ Log(21)
Log(5197)= 3.7157527168229
Log(21)=1.3222192947339
Log215197=3.7157527168229 ÷ 1.3222192947339
Ans=2.8102393692346
Step2
Alternatively, the logarithm can be calculated like this.