Convert Gregorian dates to the ancient Mayan calendar system, including Long Count, Tzolk'in, and Haab' dates.
Enter any date to see its Mayan calendar equivalent
The Mayan calendar is actually a sophisticated system of three interlocking calendars used by the ancient Maya civilization of Mesoamerica. Rather than a single calendar, it's a complex timekeeping system that tracked multiple cycles simultaneously.
The Three Calendars:
The combination of Tzolk'in and Haab' creates the Calendar Round — a 52-year cycle (18,980 days) before the same date combination repeats. This was the primary calendar for most Maya purposes.
Input any date from our modern calendar. The converter automatically displays today's date when you load the page.
The converter shows the Long Count (absolute date), Tzolk'in (sacred calendar), and Haab' (civil calendar) for your selected date.
Try converting historically significant dates, your birthday, or December 21, 2012 (the famous "end" of the 13th bak'tun).
Gregorian Date: August 11, 3114 BCE
Long Count: 0.0.0.0.0
Significance: The Mayan creation date, when the current world age began according to Maya mythology. This is day zero of the Long Count calendar.
Long Count: 13.0.0.0.0
Tzolk'in: 4 Ajaw
Haab': 3 K'ank'in
Significance: Completion of the 13th bak'tun (a 394-year cycle). Widely misinterpreted as "end of the world" but actually just the end of a calendar cycle, similar to our millennium celebrations. The calendar simply rolled over to 0.0.0.0.1 (starting the 14th bak'tun).
Long Count: 12.19.6.15.2
Tzolk'in: 7 Ik'
Haab': 10 K'ank'in
Significance: The turn of the millennium in our calendar. In the Mayan Long Count, this was near the end of the 12th bak'tun, about 12 years before the completion of the full 13-bak'tun cycle.
No. December 21, 2012 marked the completion of the 13th bak'tun (13.0.0.0.0), which is like reaching 12/31/1999 in our calendar — a notable milestone, but not an end. The Maya themselves never predicted apocalypse; they recorded dates far into the future. The calendar simply rolled over to the 14th bak'tun (0.0.0.0.1).
We need to align the Mayan Long Count with our Gregorian calendar. The GMT (Goodman-Martinez-Thompson) correlation constant of 584,283 is the most widely accepted, placing the Mayan creation date at August 11, 3114 BCE. However, other correlations exist with different constants.
A bak'tun is 144,000 days, approximately 394 years. The Long Count uses base-20 (vigesimal) system: 1 k'in = 1 day, 1 uinal = 20 k'in (20 days), 1 tun = 18 uinal (360 days), 1 k'atun = 20 tun (7,200 days), 1 bak'tun = 20 k'atun (144,000 days).
Wayeb' is the unlucky 5-day period at the end of the Haab' calendar (days 360-364). The Maya considered these days dangerous and performed rituals to protect themselves. People stayed indoors, avoided work, and made offerings to the gods during Wayeb'.
Yes, though this converter only goes one direction. To reverse the process, you'd add the Long Count days to the correlation constant, convert to Julian Day Number, then to Gregorian date. The math works both ways!
Yes! Many Maya communities in Guatemala, Mexico, Belize, and Honduras continue using the Tzolk'in for ceremonies, agriculture, and divination. Some daykeepers (aj k'ij) still maintain the sacred 260-day count that has run continuously for over 3,000 years.
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