Use the form below to do your conversion.
Solution
Step1
Log213581=Log(3581) ÷ Log(21)
Log(3581)= 3.5540043210119
Log(21)=1.3222192947339
Log213581=3.5540043210119 ÷ 1.3222192947339
Ans=2.6879083788647
Step2
Alternatively, the logarithm can be calculated like this.