Use the form below to do your conversion.
Solution
Step1
Log215681=Log(5681) ÷ Log(21)
Log(5681)= 3.7544247892773
Log(21)=1.3222192947339
Log215681=3.7544247892773 ÷ 1.3222192947339
Ans=2.8394872198812
Step2
Alternatively, the logarithm can be calculated like this.