Use the form below to do your conversion.
Solution
Step1
Log21713=Log(713) ÷ Log(21)
Log(713)= 2.8530895298519
Log(21)=1.3222192947339
Log21713=2.8530895298519 ÷ 1.3222192947339
Ans=2.1578035816109
Step2
Alternatively, the logarithm can be calculated like this.