Use the form below to do your conversion.
Solution
Step1
Log21821=Log(821) ÷ Log(21)
Log(821)= 2.9143431571194
Log(21)=1.3222192947339
Log21821=2.9143431571194 ÷ 1.3222192947339
Ans=2.2041299569039
Step2
Alternatively, the logarithm can be calculated like this.