Free Mayan Calendar Calculator 3.1

Program Features

System Requirements


Additional Software

Mayan Great Cycle Calculator
and Tzolkin Day Calculator

The Mayan Long Count Calendar came to an end on December 21, 2012 the bakun date of The world of course did not come to an end. More precisely the day was the end of the Mayan Great Cycle. The Great Cycle is made of 13 bakuns of 144,000 days or a total of 1,872,000 days.

The current Great Cycle we are in will end May 3, 7138.

This version of the Mayan calculator continues to feature the calculations regarding the Great Cycle. The historical Long Count value is also calculated using a six number notation


The Mayan Long Count calendar is based on cycles of days. These cycles are for the most part based on multiples of twenty.

Kin1 day.
Uinal20 x kin = 20 days.
Tun18 x uinal = 360 days = 0.99 years.
Katun20 x tun = 7,200 days = 19.71 years.
Bakun20 x katun = 144,000 days = 394.25 years.
Pictun20 x bakun = 2,880,000 days = 7,885 years.
Great Cycle13 x bakun = 1,872,000 days = 5,125.26 years.

Program Features

Mayan Calendar Calculator Version 3.1 is a minor change to the program. A new feature is the ability to copy all values to a clipboard to paste into any program. This update should replace all previous versions of the program.
  • Years from 99,000 B.C. to 99,999 A.D.
  • Elapsed days - Great Cycle.
  • Remaining days - Great Cycle.
  • Percentage of Great Cycle.
  • Cycle Harmonics
  • Tzolkin Day
  • Historical Long Count
  • Copy Report to Clipboard
  • Help File

System Requirements

The Free Mayan Long Count Calculator will run on any 32 bit Windows platform. This includes Windows 98, Windows NT, Windows XP, Vista, Windows 7 and Windows 10.

Minimum System Requirements

VGA 800 x 600, 256 Colors
Windows 98
2 Mb of Free Hard Drive Space

Download Free Program

Version 3.1 is a minor rewrite of the program. It should replace all previous versions of the program.

Norton by Symantec may falsely report a "WS.reputation.1" virus.

This software will not run on a Mac, iPhone or any Apple system.

Use the following link to download the install program:

maya31.exe (500 Kb) 1/18/2018, Ver. 3.1

If you experience a problem downloading the calculator, please try clearing the cache on your browser and reloading this page. If this does not solve your problem, contact me and I would be glad to e-mail the program to you as a file attachment.

John Kostura


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