Interactive field tool
Maya Calendar
Converter
Translate a Gregorian date into the interlocking cycles of Maya time: the Long Count, Tzolk’in, and Haab.
Enter a Gregorian date
Select any Common Era date from 1 to 4000 CE.
Correlation used
GMT 584,283, placing 13.0.0.0.0 on December 21, 2012.
—
Long Count
Baktun · Katun · Tun · Uinal · K’in
Tzolk’in 260-day cycle
—Haab 365-day cycle
—Calendar Round
—18,980 days
One date, four views of time. This converter is an educational calculation—not a horoscope or fortune-telling tool.
Reading the result
How the calendars fit together
Long Count
An accumulated count of days used to place events in a chronology longer than the repeating Calendar Round.
Tzolk’in
Twenty named days turn alongside thirteen numbers, creating 260 distinct combinations.
Haab
Eighteen periods of twenty days are followed by Wayeb, a final period of five days.
Method & limits
A correlation, not a prophecy
To connect two independently developed calendar systems, scholars use a correlation constant. This tool uses the Goodman–Martínez–Thompson value 584,283, a widely used correlation that maps the Long Count creation-era position 13.0.0.0.0 to August 11, 3114 BCE in the proleptic Gregorian calendar.
Other proposed correlations can shift converted dates. Spellings also vary by Mayan language and scholarly convention; this tool uses familiar Yucatec Maya forms. The calendars are living cultural knowledge as well as subjects of archaeological study.
Learn from the source