Use the form below to do your conversion.
Solution
Step1
Log20421=Log(421) ÷ Log(20)
Log(421)= 2.6242820958357
Log(20)=1.301029995664
Log20421=2.6242820958357 ÷ 1.301029995664
Ans=2.0170803936741
Step2
Alternatively, the logarithm can be calculated like this.