Use the form below to do your conversion.
Solution
Step1
Log21403=Log(403) ÷ Log(21)
Log(403)= 2.6053050461411
Log(21)=1.3222192947339
Log21403=2.6053050461411 ÷ 1.3222192947339
Ans=1.9704031369966
Step2
Alternatively, the logarithm can be calculated like this.