Use the form below to do your conversion.
Solution
Step1
Log21985=Log(985) ÷ Log(21)
Log(985)= 2.9934362304976
Log(21)=1.3222192947339
Log21985=2.9934362304976 ÷ 1.3222192947339
Ans=2.2639483801361
Step2
Alternatively, the logarithm can be calculated like this.