SpanCalc

It is an application that gathers several utilities related to calculating days.

SpanCalc
This is an application to calculate the number of days between two specified dates. We calculate not only the number of days but also the number of weeks and months.

Japanese Era Converter
An AD, a year, the age of a person born in that year, and a zodiac sign are listed.

Age Calc
When entering the year of birth, I will calculate how many years old and what grade will be in what year.

Elapsed Days Calc
Calculate how many days later (before) the specified date.

Elapsed weeks Calc
Calculate how many weeks later (before) the specified date.