Use the form below to do your conversion.
Solution
Step1
Log21851=Log(851) ÷ Log(21)
Log(851)= 2.9299295600846
Log(21)=1.3222192947339
Log21851=2.9299295600846 ÷ 1.3222192947339
Ans=2.2159180188595
Step2
Alternatively, the logarithm can be calculated like this.