Use the form below to do your conversion.
Solution
Step1
Log21745=Log(745) ÷ Log(21)
Log(745)= 2.8721562727483
Log(21)=1.3222192947339
Log21745=2.8721562727483 ÷ 1.3222192947339
Ans=2.1722238392583
Step2
Alternatively, the logarithm can be calculated like this.