Use the form below to do your conversion.
Solution
Step1
Log215639=Log(5639) ÷ Log(21)
Log(5639)= 3.7512020945884
Log(21)=1.3222192947339
Log215639=3.7512020945884 ÷ 1.3222192947339
Ans=2.8370498823671
Step2
Alternatively, the logarithm can be calculated like this.