Use the form below to do your conversion.
Solution
Step1
Log21557=Log(557) ÷ Log(21)
Log(557)= 2.7458551951737
Log(21)=1.3222192947339
Log21557=2.7458551951737 ÷ 1.3222192947339
Ans=2.0767018043904
Step2
Alternatively, the logarithm can be calculated like this.