Printable Calendars and Calendar Tools

Printable calendars and related tools generate ready-to-use layouts of days, weeks and months that can be displayed or printed for planning. A monthly calendar arranges the dates of one month into a grid of weeks, while yearly versions condense a whole year onto a page; the tool must apply the rules of the calendar system, including the placement of the leap day in February, to fill the grid correctly.

The arrangement of dates within a month depends on which weekday the first of the month falls on, and this in turn depends on the year, so a calendar generator computes the starting weekday before drawing the grid. The Gregorian calendar's leap-year rule, which inserts an extra day in February in most years divisible by four, determines whether February has 28 or 29 days and shifts every later date accordingly. Some tools allow the week to begin on Sunday or Monday, reflecting different regional conventions.

Beyond simple layouts, calendar tools may include converters that translate a date between different calendar systems, such as the Gregorian, the older Julian, and various lunar or lunisolar calendars used for religious and cultural observances. Because these systems differ in their leap rules and starting epochs, the same astronomical day appears under different dates in each, and a converter resolves the correspondence. An astronomical calendar can also mark solstices, equinoxes and moon phases, while awareness of leap seconds matters only for the most precise timekeeping rather than everyday printable calendars.

Frequently asked questions

How does a calendar tool know where to place the dates?

It calculates which weekday the first of the month falls on for the chosen year, then fills the grid from that point, accounting for the number of days in each month.

Why can a printed calendar start the week on different days?

Regions differ in convention: some treat Sunday as the first day of the week and others Monday, so many tools let the layout begin on either day.

What does a calendar converter do?

It translates a given date between calendar systems such as the Gregorian and Julian or lunar calendars, which use different leap rules and starting points for counting years.