Use the form below to do your conversion.
Solution
Step1
Log213935=Log(3935) ÷ Log(21)
Log(3935)= 3.5949447366951
Log(21)=1.3222192947339
Log213935=3.5949447366951 ÷ 1.3222192947339
Ans=2.7188717870121
Step2
Alternatively, the logarithm can be calculated like this.