Use the form below to do your conversion.
Solution
Step1
Log216985=Log(6985) ÷ Log(21)
Log(6985)= 3.8441664104502
Log(21)=1.3222192947339
Log216985=3.8441664104502 ÷ 1.3222192947339
Ans=2.9073591844867
Step2
Alternatively, the logarithm can be calculated like this.