Use the form below to do your conversion.
Solution
Step1
Log21785=Log(785) ÷ Log(21)
Log(785)= 2.8948696567453
Log(21)=1.3222192947339
Log21785=2.8948696567453 ÷ 1.3222192947339
Ans=2.1894020668696
Step2
Alternatively, the logarithm can be calculated like this.