Use the form below to do your conversion.
Solution
Step1
Log20409=Log(409) ÷ Log(20)
Log(409)= 2.6117233080073
Log(20)=1.301029995664
Log20409=2.6117233080073 ÷ 1.301029995664
Ans=2.0074274357329
Step2
Alternatively, the logarithm can be calculated like this.