Use the form below to do your conversion.
Solution
Step1
Log215615=Log(5615) ÷ Log(21)
Log(5615)= 3.7493497605975
Log(21)=1.3222192947339
Log215615=3.7493497605975 ÷ 1.3222192947339
Ans=2.8356489543983
Step2
Alternatively, the logarithm can be calculated like this.