Use the form below to do your conversion.
Solution
Step1
Log216905=Log(6905) ÷ Log(21)
Log(6905)= 3.8391636829147
Log(21)=1.3222192947339
Log216905=3.8391636829147 ÷ 1.3222192947339
Ans=2.9035756006625
Step2
Alternatively, the logarithm can be calculated like this.