Use the form below to do your conversion.
Solution
Step1
Log128405=Log(8405) ÷ Log(12)
Log(8405)= 3.9245377177755
Log(12)=1.0791812460476
Log128405=3.9245377177755 ÷ 1.0791812460476
Ans=3.6365881376726
Step2
Alternatively, the logarithm can be calculated like this.