Use the form below to do your conversion.
Solution
Step1
Log2015221=Log(15221) ÷ Log(20)
Log(15221)= 4.1824431859572
Log(20)=1.301029995664
Log2015221=4.1824431859572 ÷ 1.301029995664
Ans=3.2147169549482
Step2
Alternatively, the logarithm can be calculated like this.