Fraction of a Time Span - Calculator

A small program to calculate the fraction of a time span in years, weeks, days, hours, minutes and seconds. One tenth (1/10) is preset as a fraction, this can of course be changed. The fraction can also be entered in the form of a decimal fraction. Please enter a period of time, the length of the corresponding fraction will be calculated. One year is calculated as 365.2421875 days.

Example: one twelfth of a year is 4 weeks, 2 days, 10 hours, 29 minutes, 3.7525 seconds. Without the weeks, it is 30 days, 10 hours, 11 minutes and 31.8525 seconds. Both periods have of course the same length.

If a fraction is entered, the corresponding decimal fraction is calculated. This makes it easier to imagine its size. If a decimal fraction is entered, however, the fields for fractions are deleted. The reason for this is quite simple: converting a decimal fraction into a real fraction can very often produce very confusing results.

Calculating a fraction is a division. Dividing time is therefore particularly laborious because it is not decimal (in steps of tens and hundreds) but works with 60 (seconds and minutes), 24 (hours of a day), 7 (days of a week) and a completely skewed number for the days or weeks of a year. Trying to calculate this without any tools is very laborious and also very prone to errors.

If you want to divide a specific period of time, i.e. from one date to another, into equal-length sections and need the start and end dates for each section, then this page can be helpful: Scheduler for periodically recurring dates.