Use the form below to do your conversion.
Solution
Step1
Log215429=Log(5429) ÷ Log(21)
Log(5429)= 3.7347198416557
Log(21)=1.3222192947339
Log215429=3.7347198416557 ÷ 1.3222192947339
Ans=2.8245842853225
Step2
Alternatively, the logarithm can be calculated like this.