This program allows for the calculation of base 10 logarithms. Most of the time you would use a log table to look up the base 10 logarithm of a number greater than zero. However, it is easy to know the base 10 logarithm of a number that is a power of 10. For example:

log_{10} 10 == log_{10} 10^{1} = 1

log_{10} 100 == log_{10} 10^{2} = 2

log_{10} 1000 == log_{10} 10^{3} = 3

log_{10} 1,000 == log_{10} 10^{4} = 4

log_{10} 10,000 == log_{10} 10^{5} = 5

and so on.

Please note that the log_{10}0 is undefined.