Use the form below to do your conversion.
Solution
Step1
Log258405=Log(8405) ÷ Log(25)
Log(8405)= 3.9245377177755
Log(25)=1.397940008672
Log258405=3.9245377177755 ÷ 1.397940008672
Ans=2.8073720570481
Step2
Alternatively, the logarithm can be calculated like this.