Guides to making and printing calendars

• Calendar paper sizes: Letter, Legal, Tabloid, A4, A3 and 12 × 12

  Every paper size the maker prints, in inches, millimeters and points, which ones a home printer takes, and the sizes of shop-bought wall and desk calendars.

• How to print a calendar at home or at a copy shop

  Print settings that keep a calendar the right size, how to test before printing twelve pages, and what to ask for at a copy shop such as Staples, FedEx Office or Walgreens.

• How to bind a calendar at home

  Seven ways to hold a printed calendar together and hang it, from binder rings and ribbon to coil binding at a copy shop, with where to punch the holes.

• The best paper for a printable calendar

  Which paper weight to use for a calendar you write on, a photo calendar and a wall calendar, with pound weights converted to g/m² for bond, text, cover and index paper.

• Does the week start on Sunday or Monday? By country

  Which day calendars start the week on in each country, from the Unicode CLDR data that phones and computers use: Sunday, Monday, Saturday or Friday.

• ISO week numbers: how they work and why 2026 has 53 weeks

  The ISO 8601 rules for week numbers, why some years have 53 weeks, the years that do from 2020 to 2040, and when week 1 starts in each year to 2030.

Making the calendar itself

The makers do the date work: start month, week start, holidays, week numbers and moon phases. Start with the calendar maker, or pick a ready set-up for a photo calendar, a birthday calendar or a school year calendar. For holiday lists by country, see holidays.